So, my 89 Ram 50 now has a narrowed 8-3/4 rear under it with a 4-link.so, silly question. I need to run an adapter fitting from the factory master cylinder (metric) to the 72 E body rear end.

Anyone know the sizes off the top of their head so I can order the adapter? The truck is 40 miles away in my buddies shop.

Laine.