it's 175191. Just type it into the search on the Summit site. You attach one wire from the alt to the battery. You must upgrade to a larger wire. I think a #6. I used a Summit alt wiring kit. It included new wire, terminals, and a fuse.
I don't understand why Mark Worman from Graveyard Cars keeps featuring his products, with so much bad press. When the poop flies, some of it is going to stick to Worman.