I have a 400M that I got a Edelbrock 4 barrel and intake (Non-EGR) to replace the stock stuff. I got a new gasket, which is nothing but a fiber gasket against each head, and a cork peice for the front and back. When I pulled the stock intake off it has a full sheetmetal intake gasket/valley cover. There was silicon at each end, but nothing at all around the head/intake seal?

Should I reuse the stock cover and seal around everything?
Reuse the stock and only seal the ends like I found it?
Use the aftermarket gaskets and toss the sheetmetal cover?

Thanks,
CHAZ

Yeah, I also posted this on the HAMB, but I haven't gotten any responses.