depends what you want to do...
if you want top end power, at higher rpm, the single-plane Torker2 will feed the motor better. But, your bottom end, at lower rpm, will slightly be compramized. Chevy motors are better for top end, and so most SBC owners use Torker2s
if you want a more driveable combination, for a mix of top and bottom end performance, through the full rev range, you are better with the dual-plane PerformerRPM. If you are running a stock cam, or nothing too agressive, the dual-plane PerformerRPM will compliment it better than the single-plane Torker2.
It all depends on what you're looking for, but either way, the intake should compliment and work with the cam