Still not quite there Cudaragtop sorry, if I have a set of 14" Rallye rims of my 73 Cuda for eg. I want to put them in a lathe and cut the weld that joins the centre disc to remove the 14" diam rim section, then buy a set of 15" rims that dont have any centres in them, then weld the centers from the 14" rims into the 15" rims, what I need someone to do is if they have both the factory 14" and 15" rims on hand, can they measure the centre diam to know if it it by chance is the same diam.
Greg