Ahh, now we're getting somewhere.

First, get some good tires. Drag radials are a start, ET Streets would be a step up. All the power in the world means jack squat unless you can put it to the pavement. After that, subframe connectors, lower control arms w/ relocation brackets, torque arm and front shocks/springs would be a great start.

The interceptor (B4C) package is basically a bigger alternator and some suspension stuff if I remember. Nothing that's going to help you a lot on straightline racing.