I popped the hood today to check the vacuum hose that connects from the manifold to the booster, the hose is fine, but the tension clip thing had slipped. I got that slid back into place, but no change on the brakes.

I did notice there is fluid all down the front/bottom of the booster, right below where the MC bolts to it. I'm starting to suspect it's multiple things.

I'll have to check autozone for a MC rebuild kit, but I suspect I'm going to have to get a whole new MC.
Do Explorers of similar year use the same booster and mc? (I'm going to buy the rear end of an explorer for the 54...if the booster and mc will fit the ranger....2 birds, 1 stone.