I am purchasing a set of 91 vette wheels (for $250!!). Wheels are 17X9.5 and the tires are 275/40/17. Any ideas what size spacers I might need and where I might buy them? Also, has anyone else put this size (or similar) tire/wheel combo on their third-gen?

 

Those wheels either have the same backspacing, or will need spacers for a 4th gen.