Tom, I made mine the same length (from the back of the carrier to the front of the bearing) as the stock Ford combo. It works but only just. I am using '39 pedals in my '38 and the clutch pedal arm bottoms out on the frame before the pedal is flat to the floor. Looks like your new clutch pedal set up is adjustable so that should be helpful. This wasn't a problem with my stock pressure plate but I had to adjust the throw-out bearing closer to the diaphragm PP than I would normally like. It has gotten better as the new clutch has a few miles of wear on it. Love the new clutch, it is very smooth.
PS:Some winter I may notch out the frame for the extra pedal arm clearance as it gives me an good excuse to get a plasma cutter.
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