I have played this game a lot.

Lemme just buy the tail pipe and rear muffler. 3 months after I get it up, the front one craps out. I do it all now: Cat back.
I torch off the from muffler from the Cat pipe and with the Hangers off it all drops down in minutes. All that new stuff slides together nice and hangs easy.

What I do also is I weld the necks on the mufflers much better then there 4 or 5 spot welds.The neck is the area that usually lets go and causes the muffler to spin and leak. It's nice to have a welder. The few minutes I spend to do this definitely adds life to the exhaust. A LISLE Pipe expander also makes this job much more painless

http://www.lislecorp.com/tool_search_results.cfm?Search=expander
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'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.no.net/ebrox/Tony's%20cars.htm