My 37 has the newer axle with bigger king pins and it was a bolt in swap. Fact I didn't know it was there till I ordered a disk brake kit for a '37 and it didn't fit. The spindles of the newer axle have a larger inner bearing. Then when I replaced the king pins, I figured out it was the bigger axle.
I went with Master Power brakes and use 4 3/4 bolt pattern all around.
What are you guys using for a master cylinder?
I have a Mustang unit with 7/8 bore I think, its takes a lot of effort to stop, but it will stop right now if need be. I am thinking smaller bore for more pressure along with more travel.
Joe
