Personally, I think you car looks really nice. The paint seems to be in great shape as well. If everything is clean in that department, I would go with the go-fast mods.
But, whichever way you decide to go, here is the place to be. You can probably find pictures of any color stang with any hood/bumpers/side skirts combination. So if you like how, for instance, a specific bumper looks, do a search & you will be able to see it on the actual car.
Same goes with engine/
suspension/etc mods. There are tons of different combo's and people always report back when the install something new. That was the first thing I did when I installed my o/r x-pipe and my 3.73's.
Gears are the greatest bang for the buck modification you can do, without a doubt. If you go with 4.10's, you won't be sacrificing much. I wish I did, now that I have the 3.73's. It's a whole new car; I kid you not!!
As of now, I am saving up for h/c/i (I have $1200 now, but I want to get the trick flow kit & do it all at once). I already have traction problems; I can't wait until the h/c/i to see what happens.
Just doing a MAF or TB won't gain you any noticeable power as you sit. After h/c/i, you might notice it.
Start with gears, then an intake manifold, and go from there. Instant & dyno proven 22rwhp with the new intake manifold.
Scott