Thanks for the advice, Hank. You're right, the rpms at 55 mph on the highway are a bit high (my wife smiles and suggests it's time to shift again). More responses. Exhaust: after leaving the headers, the exhaust is a single 2 1/4 inch pipe all the way back. Intake: I've had the Offy intake for quite a few years, so thought I'd use it for a couple more. Carb Spacer: I used a one-inch carb spacer last year (HVH Super Sucker) and have bought a two-inch to try in the coming year. Damper: It's a rebuilt stocker from the Damper Doctor.