I had my centre muffler deleted recently. Sounds like ass with the stock mufflers. Out of curiosity I put my muffler delete pipes on and it's unbearably loud (Sounds F***ing cool) but far too obnoxious. So now I have the stock mufflers back on until I find some replacements. May have to chuck in a resonator too depending what mufflers I go for.
Google tells me the 5eat transmissions are vtd. Is that right?
Edit: Some good info in here http://legacygt.com/forums/showthread.php/explanation-continuous-active-and-vtd-awd-systems-honest-attempt-48112.html
The rears on mine weren't bad... used a mate and a jack to make things a little smoother.
I also made some cuts in the carpet around the top hats so I could get in there nice and easy