Looking at a set of Rally wheels to fit to my 56 Century. Will these fit?

4 buick 15" x 7" rims with tyres

tidy and still presentable though some minor pitting visible

2 x 215 60 15 tires usable

2 x 205 60 15 casings only

same stud pattern as chev and hq holden

41/4" off set from rear

Thanks