The 6 pack is hard to beat up to 450 - 500hp on a street engine;

Part #1

http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/index.html

Part #2

http://www.hotrod.com/techarticles/hrdp_0801_mopar_intake_manifolds/index.html

6 pack advantages;

- far outperforms other factory B or RB intake/carb combos (with the possible exception of the MW crossram, but the six pack would still be better for the street)

- looks way cool!

6 pack disadvantages;

- cost

- some of the better 4bbl intakes will outperform 6 pack at higher (over 450hp) levels.

yes, I might be a little biased, though the articles speak for themselves




Dave