Where is a place to buy factory Rims?

[Lowerd1]

I am looking for a place to get some decent wheels for my 1979 Chevy and was wandering where I might get some? I thought about maybe looking for some used stockers but they seem impossible to find.

The rims on the truck now are like $30 new in Jegs but they are just scary ugly. My dad told me were I could get a deal on some Corvette ralleys but I really like the stock factory look of the older Chevy rims like my 1972 Chevy had. Anybody know where to find these and not for $125 a piece.

Also I know the specs on the rims are 15" 5x5" but what is the offset with the 15x8" rims?

Thanks!