A few recollections..............
Paul Banham manufactured quite a few "body conversion" kits, eg
The Sprint - a Frogeye Sprite body on an old style Mini floorpan,
The X99 (later X21) the Audi TT (both convertible and coupe versions) on a Metro. (TTs may be cheap now, but not when Banham introduced them, even though the TT itself at first was only a Golf in a dress...............)
Several other for the Metro, not necessarily copying any particular model
The Speedster - a James Dean style Porsche on a Skoda Estelle/Rapide floorpan (don't forget that particular Skoda's rally successes before commenting)
The XSS (I think, IIRC) - a set of body panels which IMHO did make the Jaguar XJS look good
A Ford RS200 rally car body set, but I can't recall what donor car it used.
You may think some of these to be a bit of a joke, but he was producing these 12-15 years ago, and being body conversions, they did not need to go through SVA testing, which had been introduced not long before.
EDIT - On re-reading my post, it looks like I'm a fan of the Banham range. Er, No, but I have visited Kitcar shows for many years, and you pick up bits of trivia along the way!