It's possible. Anything is possible. It's just going to be expensive. What is your goal for track times? Sub-15? Sub-14?
You can probably run under 15 seconds with Intake
, exhaust, header, and Power FC (ECU). To run under 14 seconds in a GT, you'll need to go forced induction. Good news is that the GT is easier to Turbo than the GTS, and SF actually makes a nice kit for it.
Oh yeah... and reduce the weight as much as possible before hitting the track. If you have subs in back, pull them out. Ditch the spare tire. Go on 1/4 or 1/8 tank of gas. Remove the backseats if you're willing to go that far.
Anything is possible... but it takes time, money, and effort.