will or is there a way to get 4.75 fit my 4.50

ya but they cost alot but why can some use the uni lug wheels that fit on 4.75 and 4.50?

I think it would be wise to really think through some of your questions before asking. You knew that the Chevy rims were 4.75s and that they weren't uni-lug (which usually means 4.75 and 4.5). Are you going for a posting record?