Single vs Dual Plane, big difference?

Well thanks for all thr replies and suggestions guys, appreciate it! I've decided to go with the Performer intake, and as for the carb i'll run the 750 since i have it and if it doesn't work out i'll get myself a 600.

Can't go wrong here, the 600 (or even a Thermoquad,later on..) ,works great with a baseline Performer.