[dsraven]

you will want to ensure you get a master that is for non power brakes. the power brake masters can sometimes have a larger piston in them because you don't notice the extra amount of push required to move the extra fluid when you have the booster to help you out.
if you are simply wanting a small opower unit under the floor check out the hydroboost units. they run off the power steering pumps and give great boost. ogre has one on his truck with pics of the unit and how he made it work. more room under the floor but still gonna have hoses etc if you're trying to look super original or have less stuff looking back at you with the hood open.