Re: Upper intake??
Why would you want to get rid of the 5.7 intake manifold? It's a lot better than the 6.1!
Smoother runners, less weight, no heat soak issues, longer runners = more low end torque, ect, ect...it has may advantages except for looks...it is quite ugly.
My only concern with the 5.7 intake mani is will it hold together under 20+ psi's!
I still have MDS in mine...and it works perfectly.
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