I recently bought a 2F out of an early 60 series from a fellow mudder. The distributor cap is cracked and it is much larger than the cap off of my stock 79 2F dizzy. I went to autozone to order one and they show to all be the same for each model. I tried to cross reference the Denso part number, 029120-220, and nothing came up on Google or the autozone website. Am I missing something? I'm almost done with the motor swap and little things are holding me up...I want to hear this thing run!