I've found several 90 degree brake pedal assy for sale, they state that you can use them with manual or power brakes. Considering the ratio is different I can't see how this is possible. Has anyone used one of these that would have some input? I'm using manual, corvette style MC, disc all around, Speedways 9 inch rotor and metric caliper in the front, rears are 11.75 with GM A body type calipers, MC has a 1 inch bore. This would solve my space problems, but just by the picture I can't really tell if I could change the ratio.