Of course, an engine like a 22RE won't really benefit much, if any. If you want more power, look at good header/free flowing exhaust. Getting rid of the waste exhaust and heat is generally more effective than messing with the intake.
YES. a header and good exhaust is the best performance mod you can do. A good Downey or LC header will work wonders with some 2 or 2 1/4 pipe straight back. If you are still insisting on an intake check downey or PM me I might be able to find a downey intake for you.