3400 UIM runners port to 3500 LIM

[IsaacHayes]

Jon, you car lost it's stock appearance with the lopey cam, headers, shiny TB, and CAI LOL. Only adapter I needed was the TB adapter (not counting EGR). The way I ran my vacuum lines it retains the steel vacuum tube and it all looks like it was meant to be (stock). Picture BTW did you port your 3500 lower to the 3500 metal gaskets? If so just grab a 3500 plenum and port it and you'll be good. Remember you don't even have to port the TB neck on them! You cannot evade the plenum forever!! hahahah But the thread on here about 3500 plenum and spray (nitrous) is of a concern I think. So remember that. But it does help a LOT with high RPMs.

[3400-95-Modified]

Yes but they look at it, not running and they say, OH its just a 3.1L with headers and a CAI

But yes I ported my 3500 lower to match the gaskets too, But I doubt my porting job is as good as what ben could do, or what he does. And whats this issue with spray and a 3500 upper?