Single Plane or Dual Plane? The Great debate!

290/294
239/243
.550/.560
112 LSA
108 ICL

The 2 builds were 99% identical, the only difference was intake. 50lbft or torque at 3000rpm is a BIG deal, and its all in the intake, Im 100% sure of it. I have seen it many times, this is just the most recent.