I want rear discs and got a smoking deal on a rear 1997 fj80 axle. My question is do I need a new mc to get the brakes to work right or is the stock taco one ok? I already have a prop valve and a residual valve (do I need this since its full flaoter?) Ready to be swapped in. I have looked at a few builds that used this axle but no one talks about the brakes. This will be swapped into a 2002 taco.