[JM 35 Sedan]

It is a bit confusing for someone who has not been through this before. As I read your original post, I wondered which engine and radiator you have in your '35, or is it a '36 pickup? Later in your thread you think your block is a '37, and after that you mention the water pumps are in the heads. Which is very possible to do with a '37 block, and '36 or earlier heads. If this is your actual set-up, you would also have a set of block off plates bolted to the front of the block where the '37-'48 type water pumps would normally have been bolted. If this is your actual set-up, and you definitely want to use a 12V alternator, my suggest would also be to use a stock generator with fan mount pulley, and have Ed Whitney convert that to a 12V alternator. Then you would need to find a stock '35/'36 pickup fan with a four bolt mounting that gives you the correct fan blade to radiator spacing. A high rise 2x2 intake manifold such as a Thickstun PM7 or an Eddie Myers will give you enough space for a stock generator or a Whitney gen/alt conversion.... and I'm still wondering which radiator you are planning to use??