Need Power What Should I Do Next? Thanks

[Thad]

Since you're not upgrading the intake the bigger throttle body won't really do anything. What you could do is have the stock heads and intake port and polished then add a slightly bigger TB. this would give you some more umf than straight stock.
The reasoning behind not going with a bigger TB is that the engine won't breathe any different unless you change it some how. Either with porting or aftermarket heads.
The exhaust will help a bit but i would reccomend the aftermarket headers along with the cat back system. you run into the same effect with the breathing of the engine.
the most noticable power gains come from the opening up of your intake and heads.

Good Luck!
thad