JIMs70K25
1/2 ton status
My 89 has a weight/load sensing prop valve for the rear brakes. As you can see from my sig I have a gov-loc 14bsf, I'd like to swap in a 14BFF. What will I have to do with the brakes in the rear w/ the funky prop valve? (there's a couple for sell in a local rag I'm thinking of pursuing)