The Lotus Eleven Register deals only with authentic, Lotus-built Elevens. This site can help those wishing to understand more about original build and assembly details. But if you are asking about building a new one from scratch or from a kit, other websites can help you with those options.
Other than scouring the Earth searching for one that isn't already discovered, try joining the Historic Lotus Register and placing a want-ad in its fine magazine. Sorry, but the Lotus Eleven Site doesn't get involved in sales, purchases or any commercial activity.
There are links throughout the site to contact the editor (Jay Sloane). Messages or questions can also be forwarded when possible to others in the Lotus Eleven world. Much of the information and at least half of the photos on this site have been sent in by the Internet-connected community of Lotus Eleven enthusiasts. HOWEVER, direct emails from lotuseleven.org should be considered as Internet SPAM and should be deleted. This web site never sends emails.
In an effort to reduce fraud and the spread of fake Elevens, information assistance is only available to owners of cars deemed to be authentic.
Lotus founder Colin Chapman had given prior Lotus designs a Roman numeral Mark number but by the time of the Mk VIII, IX and X this had become unwieldy. He liked the way Lotus Eleven sounded and the new design was so named. Lotus racing designs are generally described by their number, i.e. 23 or 49, but road cars followed the pattern of the Eleven with names like Elite and Elan. Car names beginning with E became a Lotus tradition.
Everyone who wants to be a member, automatically is. There are no meetings or dues, because this isn't a club. It is a database. If you own an Eleven or know someone who does it should be considered essential to make sure it is registered and accounted for. Meanwhile, try joining the HLR.
Apart from different configurations and engines, and the gradual evolution of the design, Lotus intended for all Elevens sold to be as similar as hand-built cars could be. Many cars however were sold new as partially completed kits, so the final assembly was left to owners and differences from car to car were inevitable. Among 'export' Elevens that left Lotus as finished racing machines, many of the differences that exist today are the result of either pragmatic or confused modifications made over the last fifty years. Some of these changes are part of the history and identity of each car and ought to be preserved. Some are just mistakes.
Author and enthusiast Ian Smith wrote the factory-approved story, including a few chapters and articles on the Eleven. Then after production ended, the cars went through a 'dark age' when little was written about them. Decades later people began asking questions again and the void was filled with a variety of recollections and many errors. For example some original owners had been told they were buying actual Team Lotus cars, or other exaggerations made to help sell cars. Some assumed that their LeMans Elevens had actually been in the race itself. Most owners had no concept of how many Elevens existed and so a stray photo of one in a old magazine could easily be mistaken for their own. Inaccurate race reports, faulty memories and jumbled facts have infected several published histories, which unfortunately have been cited by others. Due to this the Wikipedia page on Elevens has at times been in complete disarray. One of the benefits of a web-based but controlled archive like this site is that errors can quickly be corrected when identified and the record set straight. Many promised articles at www.lotuseleven.org are unfinished however, because complete verification of details hasn't yet been possible.
Persistence and determination are omnipotent. Vehicle history can be gathered with: a survey of information in this database and that of the HLR; interviews of previous owners; research into area race records; careful forensic examination of the car and often, luck. Most cars have at least one prior owner who was diligent about preserving the history. Unfortunately some other owners have thrown it all away. But determined detective work can bring it back. Despite the relatively high number of Elevens built, they always left an impression on the people around them and memories can be surprisingly strong. But time is the enemy, so hurry!
You're the type of person the people asking the previous question want to meet. This website exists to help tie loose ends together. Please contact this register with your information and an effort will be made to locate the car. There have been many successes with continuous vehicle histories established from this kind of cooperation.