Can someone post me a link to which pypes muffler is for the 05-08 Mustang GT?

I don't want to put any extra things on the exhaust.
I was wondering if they require a x pipe or anything extra besides the axle back to make em sound good.
I was also wondering... are they a muffler delete or no?
I read on the webpage mentionings of muffler delete so I wanna know if they are deleted or not.
thanks!

http://www.brenspeed.com/mustang_2005/mufflers.html

No X-pipe required, they use the factory H, replace all from there back.
Be prepared for some time to align everything, fitment is fair,I & most have had problems getting the pass side tip aligned.
Do some reading on the Pypes MM, there has been alot on the system.
They are a bullet-style straight-thru muffler(like the cherry bomb from long ago) under the car instead of the chambered muffler @ rear as stock, so it's not really a muffler delete.
Here's a vid of mine when I had that system on mine;
http://www.youtube.com/watch?v=fANDdIp2GjY

http://www.pbase.com/paulyoly/image/90057475.jpg


It come with two glasspack type mufflers that go under the gas tank. It's not the easiest thing to install because it requires replacing the over axle pipe, which is a pain to get out. If you aren't good at problem solving, then you might want to look elsewhere.;)