B-body drums on the front of a 65 Cuda?

I would stick with your current setup until a disk conversion was possible. I realize that you will see a small difference in braking, but 1) you will still have drum brakes, and 2) the money you spend on this conversion could go towards a disk conversion. No matter how little you think you will have in the drum-to-drum conversion, you will wind up with more than you think. That is the way it always works out. I just can't see doing a drum-to-drum conversion.