I think there is more velocity and bottom end torque with the performer for your present combination.
The rpm intake will not help the bottom end but still be OK. It may get you some more rpm up top (3-500 more). Good heads would allow the rpm intake to show its full potential. Perhaps 1,000 rpm more with better bottom end to boot.
I really don't think it will show up on the time slip with the way your present combination.
Afterall, torque is what will "get the barge moving".
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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