[need4speed]

I have the BG Mighty Demon 750 on my ZZ430 and have been extremly pleased with it so far. Very tunable and absolutely no problems since initial startup of the engine. In fact I used it set as-is right out of the box and it fired right away, requiring only minor idle and mixture adjustments. There is no choke to remove and according to Chuck Beck it produces about an additional 30HP on the top end over a similar Holley model. I can't say that this is a definite fact since I have never seen any real data but Chuck does know a thing or three about this topic since he has been building race cars for over 40 years, including one of the GT40's as part of Shelby's team back in the 60's.

That said, I think that either the 750 cfm Demon or Holley will work equally well and they both can be enhanced quite a bit more if necessary. The Vac secondaries are really not necessary in such a light car with that much power. In the case of the Mighty Demon DP, it comes with a progressive secondary linkage to tame it down a bit but this can be changed to a 1:1 linkage to really give it some juice.