The idea behind the Burton is quite simple: remove the body from the 2CV undercarriage and replace it with the new polyester body.
Every 2CV or Dyane can basically be used as a donor. Ami, Acadiane and some mehari's are not suited because of the extended wheelbase and chassis. Also things like suspension pots, fuel tank and handbrake lever are quite different to a 2CV or Dyane.

Before you purchase a donor car you first have to determine which car you are going to use, there have been quite a few models and there are some technical aspects you have to take in account.
The following paragraphs will help you in making a choice.