All, I have a 60 F100 placed on a 65 Chassis. It has a 302 supposedly stroked to a 347. It is a carbureted set up with a Motorcraft E4ZE-12131-AA Distributor which as I understand is the wrong distributor since it is for and EFI engine. The engine at idle is way to far advanced and is ideling around 1500rpms. If i retard the timing, it will lope and sound good, but then fall on its face when you put on the accelerator. To make it even more confusing, the builder put in an MSD 6al ignition control module in and decided to cut all but 2 wires to the distributor. Obviously to make it run some how. I aim to put in a vacuum advance distributor, which sounds easy enough, but I have no clue what kind of cam was put in (Roller Cam Vs. Flat Tappet ) and have no way to find out from the builder, since that was several owners ago. Is there any easy way to solve this mystery so that I can get the correct distributor with the correct gear and this beast back on the road and make it reliable for my wife to drive? I bought it for her for her birthday, and she is hella excited to take it out. As always, any advice is GREATLY Appreciated!