hey there-i have a question for all owners of a 40-48 chevy. if your car has its master cylinder mounted under the floor i was wondering if you could help me. i am trying to decide where to mount the master cylinder on my 47 chevy coupe. i can't decide between the firewall or under the floor. i was hoping to run power brakes also. so, the question is, can anyone give me some dimensions of an under the floor master cylinder? Also, where exactly does it mount and how does it mount? How much ground clearance is left usually(does it hang below the frame)? And, is there usually still enough room to easily run exhaust? If anyone can help out that would be great. it would give me a better idea of which direction to go.