Win-win

Brake cylinder is more difficult. You will need to find out:

* what kind of pushrod the cylinder is supposed to have. This is give you the correct end to fit into the cylinder

* a stock 1200 cylinder pushrod to compare it with. This is the end that goes on the pedal

Cut and weld the two together. If the length is not correct, use shims. Most master cylinders require a tiny bit of play in the pushrod to work correctly, so the length is critical!