It's a homemade carb with a proform main body. We made minimal changes to the carb and it runs great. Nice and flat fuel curve. After we get the WOT dialed in, I'm tuning for gas mileage. He's only getting like 10 right now.I take it, that this is a blow through set up. Is it a homemade carb, CSU, etc? Is there a thread that talks about the engine? I have a T76 set up, that I could use on my 66, but not too sure if I really want to do that.