I am confused.
You started your post saying your 350 will be stock no hot cam. That gave me the idea that speed was not an issue with you. If that is so why is mucho exhaust relief so important? My 350 crate is 330 horse because I ordered it with a mild cam because I like the lope you hear with a higher lift. I am running ceramic block hugger headers and perfectly satisfied with them. After all a truck with 80% of its weight on the front is not going to leap off the line unless you tub your rear fenders.
I'm not really looking for mucho exhaust...I was thinking more on the lines of a cast manifold with a rear dump flange..
I was thinking this would do a couple of things..keep the heat down (of course I could use ceramic coated headers) and allow more clearance in the engine box by routing the exhaust straight out the back.
I bought the 350 crate with about 300 horses...no cam
