Putting my top end back together. Stealth heads are now CNC ported. In the past, the stock stamped valley pan worked just fine. Now the port windows are larger, so the stamped valley pan is out (I believe). So I’m soliciting experience from what others have done.

My assumption is to cut the intake gasket portion of stock valley pan off, leaving a short tab at the bend. Then silicone the joint from that to paper gaskets cut to match the port. (????). Am I close?

What have others had success with?