Whats the best intake manifold??

I have AS&M runners and i need to get me a manifold what do you guy suggest??? Also are there after market plennums for my car? or should i just port the stock one.. i drive a 91 z28 thanks!

The aftermarket TPI manifolds are now made by Edelbrock. So by the cheapest one you can find.

BBK is comming out with a new TPI intake system. Seeing as you already have the runners you probably are not interested. Same with the First Fuel Injection system.