I’m about to upgrade my ‘55 with their bracket and booster. I already bought a Wilwood M/C, proportional valve and front disc brakes. Unfortunately the way the valve mounts with the M/C on the firewall, the outputs on the bottom of the valve are right on top of the clutch mechanism and you can’t plumb it. I contacted ABS and they said they would sell me the offset bracket and booster alone to mount the components I already paid over $500 for! They saved my bacon! I haven’t received their quote for the bracket/booster or purchased and installed for that matter but I’m hopeful it will work out. I’ll post results after installation. One note, the battery has to be relocated in my ‘55 but I planned on doing that anyway.