I don't remember, it was 45 years ago and I know Wisconsin like I know the back of your hand. His name was Bob Schattiker(I don't know the spelling). I know that he pulled at the Wisconsin State Fair. It had a big funnel shaped manifold up front with four Holley 850 double pumpers mounted across the top. Exhaust was two big pipes pointed straight up that supposedly shot flames when it was running wide open. No mufflers. It must have been freaking loud.
Edit to add: Pretty funny, I have no idea where he lived, but I can describe the tractor.
Edit again: I do remember that Bob lost the farm in one of the recessions, maybe in the '80s. He ended up working for his brother Rollie who started a cow-**** pumping and hauling business after environmental laws forced dairy owners to store their shit in tanks. He'd pump them out and then spray it on fields. He was pretty successful. Rollie was the smart one in that family. Dad had 60 first cousins and they were kinda hard to keep track of ...