The Kelsey-Hayes Disk Brake Swap Thread

I'm not an expert on the potential difference between the two MC part numbers you list. Ask your parts counter guy. IF the only difference in the bore size, most guys think the smaller bore works better to give slightly less pedle effort.

I'm also not sure how to answer your pushrod question. Perhaps start a separate thread with that question in the title and someone with more knowledge will answer your question. When you figure it out, post the answer on this thread for the next guy.

I would try to carefully rebend the brake lines to the new locations for the MC. BUT you do need to change your distribution block to a proportioning valve. When you do that the short lines from the prop valve to the new MC will be easy to replace if you can't bend them.

Good luck!