Jim's advice is sound. I have a hundred horsepower less and, last summer, when I was installing the adjustable vacuum secondary gizmo I had trouble on the street getting my secondaries to open fully because the rear wheels were spinning loose. I've been driving that car going on eight years and it's almost second nature to me... but the very few times that I go heavy on the throttle is still scary. And wheel spin at any speed over, say, 40 MPH, on the street is not only stupid, it's potentially dangerous as well. Just remember that if you're revving 3500 RPM in, say, 3rd gear, and for some reason you just decide to floor it, you have a 50/50 chance of wrecking your car.
EDIT - This is the gizmo of which I speak:
Theoretical Vacuum Secondary Question