<< From: harold losey <strlcuckoo_46@xxxx> Jerry, I have a question that i can't get answered so I thought to ask you. I am swapping from drum to disc brakes on my '74 one owner Gremmie and want to know if I can use a master cylinder from a manual disc system, say from a hornet? The power booster just sticks the cylinder so far out into the engins compartment. Any and all help always appreciated. Hal >> Hal, there's probably no reason a non-power master cylinder can't be used, other than space consideration, and although I'm more used to Chevrolet in this area, as the MC's fit the firewall and power unit both. I've never in "real life" TRIED to look for any differences between the MC's on a power or non-power car on an AMC, but I don't think they're redesign it just for that purpose. I believe there IS plenty of room in front, so the MC shouldn't have changed between power and non-power use, only the length of the brake lines to reach it. So yes, you can go ahead and put the non-power MC on the power unit. Nothing inside the MC like the proportioning valve should be different, either. Bolt on with confidence if you already have one! :) Jerry 8 Gremlins, and still learning from them....