sNake

Alright I am tired of my old ZR-1s they are 275/40/17 all around. I want some nice deep dish chrome lip but black wheels. I think I am going to go with Stern ST2 18x8.5 +32 offset 245/40/18 front 18x9.5 +35 offset 275/35/18 back. The big but is that the bolt pattern is 5x120 not 5x120.65 or whatever, Ive been doing some research but can't figure out if this is going to cause problems or what. My car has the SLP suspension package with bilstein shocks or whatever so its lower some and I got a wings west body kit as well. Please is there an alternative wheel/ will this work? I am only looking at spending 1k on wheels and already pre priced the tires on tirerack so I am good with tires. Just concerned it won't fit and I will just blow a grand on nothing that can be used on my car.