When I bolted the supercharger on, there is an extra 1/2" port on the side that's not used. It's original intent is for hooking up vacuum to the brake booster. Qwank, on this site, gave me the idea. I bought the threaded plugs for deleting the vacuum pump. Cut the belt off, unbolted the pump, screwed in the oil plugs. Ran a 1/2" vacuum hose from the 1/2" port on the supercharger to the brake booster. I also Tee'd a vacuum canister into the line as well, incase there wasn't enough volume from the supercharger port. Works perfect, can't tell a difference in brake pedal feel or pressure, from stock.