Total opposite thoughts here....
@OP I have had the Whipple now for about 5000 miles and I can say this much. My focus has all shifted from wanting more HP to wanting more traction....
My advice is to not focus so much on the HP "beyond what the Whipple gives" (which is a ton of torque/HP) and instead place the extra $$$ on your drivetrain/traction setup first then focus on the HP if desired.. this is what I'm going to do myself for the next upgrades.
The reason I say this is even with the 305s I got on my 1LE the car has SO much amazing low end RPM torque that it is very hard to enjoy 1st and 2nd because you are spinning or fishtailing. I think my 60ft got worse with the Whipple and I got a lot to learn/practice (I also have a manual.)
This is my own experience and may not be the same for everyone but just my 2 cents.
Enjoy that beast you are going to love it.