8 3/4 disk breaks conversion
Yes thoise brakes are for the B body offset. 2.25 is the A body offset and 2.38 is the rest of the cars offset. Those brakes are an awsome kit.
If you are getting the 12.19 rotors your 14's won't fit. May even have to go to 16 inch rim. It depends on the offset you need.
This pic is a 16 X 7 rim with a 4.5 back space. I couldn't get a 15 in rim with that back space to try, so I can't say for sure. the 15 X 8 rim I did try did clear the brakes but it was only a 3.5 back space