Greg/John,,The height of the 3" air cleaner hits at the rear of the scoop. Maybe, the 14" might help, I'll have to do some more checking when I can get the car out of the trailer and into the shop. Also, the turbulence, or 'what ever' that's going on in there, is with the 6 pk hood. It runs fine with the cowl hood. I was trying to get cooler air to the carb when I built the air box/pan. I tried it first with the scooped hood and it was a disaster!! After I reached about 50 mph,,motor just broke up terrible. It sounded like it was drowning with fuel. I let up quickly and slowed down which eased the comotion and I idled back to the pits, changed hood back to the cowl and ran fine the rest of the day. Can't hardly wait for good weather again. I was just getting back into the swing of things!!