Recently i read an answer to a question in Chevy High Performance mag that stated dual plane manifolds were no good in N20 apps due to uneven fuel mixture distribution. On a car that is occasionally driven on the street, How much driveability are you giving up by going with a single plane manifold?
if your only planning on using a 150 shot is the uneven distribution even going to come into play? Anyone use a CCQjet on a single plane?
Im only going to drive on the street a couple few times a year and hit the track every once in a while. But i want a reliable power plant, and yes i will be juicing on the street occasionally

 

Of all the intake manifolds that will accept your legal carb and keep the EGR, none have ideal distribution. The Edelbrock 3701 is better than the Weiand 8000. But for a 150 shot, if you keep the mix rich, and pull a little spark advance when spraying, it's not that critical. Since you want your legal QJ, no single planes will work. If you're willing to switch to an illegal Holley or Demon, to go single plane, then pick a fairly small one with annular discharge boosters. A 650 isn't too small.