Flowtech is junk, had a set of shorties on my f-150 and all the welds fell apart. Just wondering, why do you want 3", 2 1/2" would work better for you and is way cheaper.
They suck! I had them on my car when I bought it and they are ugly, leak and you cannot even tighten all the bolts. Replaced them with the MAC's, much better. Wish I would of ponied up for ceramic though.
What are you trying to do with a full 3 inch exhaust man? It says in your sig that you are running a stock motor. If you run a 3 inch exhaust, you might as well kiss what ever power you have now goodbye.
definitely don't get Flowtechs. Mine were junk out of the box, they came with the car new in the box and had poor fitment, they even look cheap. They were the equal length ones BTW. Went with the Macs and was very happy with them. Also, 2.5" is the way to go with the setup you have I think. Mine had a supercharger, sold it, now looking for another one and I've been told by several people that my Macs with the X-pipe and flowmasters, all 2.5, is just fine for that.