my next mod is for free, what should it be?

[Titan]

For under $200, you're not going to find something that you can notice a gain in HP. Pullies vary, some say they can feel it, others say they can't. It's only a few HP. Gears would be great, but that $200 would only get you the gears. By the time you get the overhaul kit, speedo calibrator, and install bill you'll be looking at spending atleast $350 (not including the gears themselves). MAF and TB won't do you much on a stock engine. You could get lowering springs, but you'll stop lose time off the line (you look better losing, though).

I agree w/ gary, get a Pro 5.0 shifter, that's what I want for my next mod (and probably final, too). You won't notice a power increase, but you will never miss third again.

Another option, you could add on to that money and get an o/r H-pipe. They are about a 25 HP improvement. If you have emissions and need cats, though, they will cost you. If not, lose that stock 6-cat system...it kills performance.