Midpipe question

you wont have to. An aftermarket mid pipe will fit the stock catback. Most are 2 1/2 inches. Get an H pipe, you will love the sound with the flows.

Nick

I had the same problem. I got an MRT hpipe 2.5" and actually ordered the wrong flows 2.25" to go with them. I didn't realize this until after it was all put on (flows welded in) and there was a small gap between the piece which connected the hpipe to the catback. I eneded up taking it back in and they cut a piece of the flowmaster pipe off (like 6" off right before the muffler itself) and welded on a 2.5" piece of pipe of the same length back on to the muffler which inturn made a nice even fit to the hpipe.

Bottom line, of course you would want the 2.5" flows to accomodate your 2.5" midpipe, but it's not a show stopper. Whoever puts it on can do the same and you can keep your exiting flowmasters. You won't see any noticable loss by doing this, in fact, if you're replacing the stock H, you will see nice gains and sounds, and not worry about the mismatch between the midpipe and catback.
Hope this helps
Later

Most midpipes have a flange that closes down to fit 2.25-2.5''. Catbacks and midpipes all should be interchangeable even if their pipe sizes are exactly the same.

kirkyg

the socket joints on them will work fine from 2.5 to 2.25

Oh and get an X pipe, and straight through mufflers -
here's why-
http://www.cap42.com/stang/burn.mpg
http://www.cap42.com/stang/burn1.mpg
http://www.cap42.com/stang/burn2.mpg