Here in the UK we have the kit car original bodied conversions.......and whilst some are really quite good in styling terms......others are less so...... significantly less so this the original donor vehicles today perhaps more revered (perhaps).
Personally I find most of the American conversions (as pictured) rather gross. Even the 'donor' vehicles are (in my eyes anyway) gross in many cases, certainly the 70's based cars. A nice clean late 60's Eldorado, Toronado or Continental coupe is a thing whilst huge, perfectly balanced in styling terms.