Hey everybody, I have a set of ADR 18x7.5 rims with a 42mm offset. Whats the correct adapters needed? I searched the forum and found that others with 67 mustangs and 18x7.5 rims with an 38mm offset used 1" adapters. So I'm guessing 38mm offsets not far from 42mm offset, so I should go with a 1" adaptor as well? I saw the charts for measuring bs and offsets and stuff but maths not my strong point unfortunately, alot of numbers make me dizzy lol 
Also I was pricing adapters on ebay and there were adapters for 94 and up mustangs but they also had some for 67 mustangs. Shouldnt they all fit the same or are the center bores different or something?

Also I was pricing adapters on ebay and there were adapters for 94 and up mustangs but they also had some for 67 mustangs. Shouldnt they all fit the same or are the center bores different or something?