Craig & William:
Sorry to disturb you two.
Let me throw my "simpleton" observation in here.
A buddy of mine has a Y/A Starfire, the exhaust outlet is 3 3/8".
Back to me now. I plan on running an O.S 77 w/ Dynamax.
Would a bigger engine, for example, K&B 1.00 create more problems, such as, weight versus horsepower, and would any intake/exhaust issues arise. being a more powerful engine, would it require more air??
thanks George