I need some help with Corvette rims!

Hey guys, so i am in the market for some new rims to put on my 1995 camaro z28. I was interested in the c5, c6, or c6 zo6 corvette rims, though I'm leaning towards the c6's. I'm also debating whether or not I should go with a 17 or 18 inch rim. The specific rims I'm looking at are not REAL corvette rims, they're replicas. I don't know what size real corvette rims are, but I have heard tons of complications you get with the real ones, like rubbing and such. The two replicas im looking at are 17x9.5 with an offset of 54. Or the others which are 18x8.5 with an offset of 46. I really want the 18's but I Definitly do not want issues with them rubbing. So my second choice is the 17's. So my question to y'all is, will I run in any major issues with the replicas? If so, what? Thanks for all the help in advance! God bless!