Originally Posted by PiojoA7x
Thanks for clearing things up. I'm going to go with the Mac.
Now which midpipe works best. I know that the Mac shorty pro chamber bolts right up to the Mac longtubes. And other h-pipes will fit with modifications. Are there any h-pipes that can bolt on, other than pro chamber?
Good choice! I would have gone with the MAC ceramic coated LT's too. Any kind of ceramic coated header is much nicer than painted or bare steel. They'll last a lot longer!
It's always best to run the same branded mid-pipe, if you're using LT's. Otherwise, you run the risk of not a perfect fit, thus causing an exhaust leak. Plus, the Pro-Chamber has a great tone to it. Especially for v6 Mustangs, as it gives off a much deeper tone. I think you'll be happy with the Pro-Chamber.
Have you considered a Bama custom tune? It would tie all your mods together nicely and allow you to get the most power.