man im getting my ass handed to me lately im thinking of selling the car
So details man, do you have any mods? Intake
or exhaust? Weight reductions? There is allot you can do.
I have an 03 GTS 6sp with a few modest mods and I've handed plenty of Hondas, VWs, and yes and even an RX8 their ass before, and I've been handed mine plenty of times by more powerful cars as well. Which is why I read allot and try to size up my opponent so I can pick my battles. Celica is far from the fastest thing on the road, but I wouldnt go as far as calling it slow.
As was stated above Speed = Money, how fast do you want to go. If drag racing is your main thing then sure, definitely think about upgrading to something like an Evo VIII or WRX STi.