I'm new and looking for help!

I have been looking at a lot of posts in the past about exhaust systems and it seems like a lot of people like the MAC setup. Recently an ebay dealer quoted me $845 (shipped) for LT headers, prochamber, and cat-back exhaust all from MAC. The problem is I am not to familar with this brand, what kind of quality can i expect? I like the deep rumble sounding exhausts, not the raspy ones (no offense to anyone), can I expect that from this setup? Or does anyone else have any other exhaust solutions that are better/cheaper? I just got my mustang and I am a poor college student, so I would prefer cheap!!

ALSO how fun is it to put LT headers on a 99-04 mustang ??

THANKS GUYS!!