Need help from fast stangs

[nitrostang66]

This is my first post on this website, I used to post under Wacki001 but dont remember how to get username to work again. You guys helped me with a flame throwing diliema and I thank you for that. But as my taxes come back I have a new one, what to do with my money.
My car has the following setup,
1969 Boss 302 (new but have no clue on internals, just that it is an SS package from the company and they said it was with a mild cam and set to run a supercharger) it cost @3000.00.
On that I put an Eldelbrock Proformer RPM manifold
A Holley 600 carb
Msd ignition with rev limiter
Taylor wires
K and N high flow air filter
The transmission is the Stock C-4 with the B&M shift kit as well as the heavy duty rebuild kit. It has been rebuilt as well this summer.

The exhaust is dual Gt with older Headers, but has no leaks. The mufflers are Rapter(sp?)

I have Mag 500 wheels with 195 on the front and 205 on the back as well as Traction bars.

I put a fuel cell in the back(10 gal) and also but the battery in a sealed container in the back.

I have a cheater NOS 100 shot system that I rarely use but it is still hooked on.

My Question is with my car what would make her Scream, I am still learning the tricks but I have 800.00 to invest in her, and dont want to waste my time or money. The car is restored and only needs the speed to back up her good looks.

Thank you in advance for helping me with my question, Brock.