[Crcrft78]

So far I have tried 4 sets of wheel cylinders and there is something wrong with all of them. They're either too wide or the thread size for the brake line fitting is wrong. I have one last set to try from Raybestos and if those don't work then it looks like my only option is using the wheel cylinders that fit and changing the brakes lines to match.

I think it has something to do with 1973 being the first model year for a squarebody. All of the local auto parts stores list wheel cylinders up to 1972, skip 1973 and then resume at 1974. All of the wheel cylinders I've tried say they should work on 1967-72 then 1974-up and don't work on 1973. I even cross referenced the part # on the wheel cylinder I took off and the compatible wheel cylinder that matches it doesn't fit either go figure.