Hey Beau
you can get some cheap ones off ebay
the R33 kit is very very rare.
you will need the 400 R body i think as it resembles a stock r33 the most. the others are the calsonic style ones.
go for tamiya. will set you back about 150-250
again. R33 shells are very very rare.
im trying to source an R32 GTR shell and it seems i can only get em from japan at about $90