i just completed an axle swap on an 87 v10 using axles from an 89 v25 burb. i swapped out the booster, MC and prop. valve (reset it by pushing in button). according to everything i've read my booster is bad 'cause the pedal is stiff as hell while running with the vacuum hose connected and disconnected. my brakes are weak and i'm using both feet for any stopping power. going to replace the booster and figured i'll replace the MC as well to be thorough. my question is would i benefit from using a MC for a p30 van. would it increase stopping power ,etc., etc. the truck has a 6" lift abnd 35's so i'm looking for better stopping power without an major amount of mods. i've done a few searches concerning this and found bits and pieces of info. however never found anything specific to my application. any advice and PN's is appreciated.