[TerrysSPF]

I have a turkey pan that is currently not on my engine so I went out and measured it. The carb opening on the bottom of my pan is almost square. It measures aprx. 3.75 long by 3.75 wide. The bottom of the pan itself measures aprx. 14 inches long by 10.25 wide, so there is a lot of room for cutting a larger hole.

Chas- Your set up looks terrific, and I can't argue with your trial-n-error. What works, WORKS! I've also heard that the open top K&N's are bogus but I have a friend that has one and he swears by it.
-You simply can't argue with results.

I've never figured out why they would NOT work / flow more air into the carb. Your going from a solid lid to a filtered (breathable) lid. I never could figure out how that would result in LESS air flow?

-I guess that's why I'm not an engineer.