Noone mentions the GTR platform? No need to even bolt-on, it's already a BP (but needs a GT4 transplant to cope with some power).

It's not a Stadium Truck though

 

I have condisered builting up the 1.8 engine and throwing it in a ford fiesta, the old ones.

this seems stupid enough to be worth my time

sheit I could even cut the top off and make it a convertible like a miata, make a roll cage