while doing some cruzin,this (DUDE) was backing out in a panel van and didnt see me.Im not oe who "stands on the brakes alot" but in this case it had to be done.They didnt lock up at all sort of a long hard stop.The rears are done the fronts are disc.Im going to pull te front off and get some rebuilt calipers.But a guy at the cruse nite said that sometimes depending on the "cam" you can lose braking vacume at the booster.If thats the caseI want to try that first.Its still hooked up like the original.What would be another way to increase the vacume? Dan