Yeah, switch out the tranny for a standard.
Automatic cars are crap. Whats the point? Theres no fun to holding a pedal down, and its crap for racing too because you cant even double clutch it.
As an aside, why waste your money to tune a cheap car? Save your money, and buy something decent you can be proud of (not something youll be embarassed to drive when, in 5 years, you realize how ridiculous your car is).