No I am not a fan of the exo skeletons. I have always loved the GRP constructions by Midas and GTM. While GTM now out of production (but probably coming back) a freshened up Midas Gold coupe with an engine in the back would be amazing. That said I know developing such car would cost ten thousands in manhours and material and specialist work.
I had the idea to acquire an old shell and use it for a conversion, trying to keep it cheap (but I know it eventually will be expensive). Interestingly I recently read in a CKC about a ZCars universal Engine kit. They supply a frame that can hold all sorts of engines, the rear suspension is already in place. It is designed for normal hatchbacks, but perhaps could be made to fit in a Gold coupe:
http://www.zcars.org.uk/univkit.phpA very comprehensive kit including many special parts as an aluminum fuel tank is 6230 pounds excl. vat. Not cheap, but developing everything yourself isn't cheap either and would take a few years to make. It took gordon Murray more than 10 years to get his rear engined Bronze on the road! Extrapolated to me would mean a 100 years job!
Luckily I don't have the money, nor the place and time (at the moment) for such a project so that's not a burden on my shoulders. For a brief moment I had my convertible for sale to raise funds, but I just couldn't part with this fabulous car. It's such an addictive machine.