I did this operation all my self. I just put a high flow converter on and then put a y pipe out the back then uses elbows and pipes to position the exhaust to where I wanted wasnt that hard although I was doing it on the ground I used hangers and clamps that you can get at any part shop and then put just some 40 series flows on there and chrome out the back. Took longer then I wanted because I was on the ground but it was well worth it. I suggest you talk to a friend with a lift. And also just make sure you get the right lenghts before you go hacking pipe.
This mod didnt kill my performance it really gave me some Mmmmpfh but I did lose like 2 mpg its worth it for the sound . I dont even drive with my radio on it sounds so awesome. Make sure you get a muffler that gets you a nice deep growl out of your V6.
Good luck and god speed