I have a 54, with a 4 speed and a 312. First thing - if you plan to go to dual exhausts using stock dual exhaust manifolds you need to get a 55 or 56 equalizer bar. This has a curve in it allowing you to use the stock dual exhaust manifolds. otherwise, the bar is right in the middle of the manifold outlet.
Pretty simple set up and I will try to get you a pic but it is in an awkward position to take a pic. There is a bracket that mounts on the frame and one that mounts on the engine. I don't know a source for these other than a parts car.
If you are doing it stock wise, I have a stock 54 equalizer bar if you need one.