What about Wilson tapered spacers? Has anyone used on of these? I read where they alluded to a 27hp and 110cfm gains with their tapered spacers. Not certain of the test engine specifics but an increase nonetheless.
In addition to heat and vibration isolation the pickup of a few horsepower got my attention.
http://wilsonmanifolds.com/
http://store.summitracing.com/egnsea...s=false&N=+115
I plan to check my hood clearance for the 1-inch version.
Ed