So I decided to make my own exhaust system for the '91 Cat.
the plan is to cut the exhaust off just behind the dual cats and weld in two "glass paks" into a Y pipe and bolt up to the stock tail pipe section with no lers.
Here are the pics of the Y-pipe I made.
(http://members.tccoa.com/1wldbrd/Ypipe.jpg)
(http://members.tccoa.com/1wldbrd/Ypipe1.jpg)
The pipe has a nice smooth transition to a single 2 1/4" outlet, which should flow better then the stock resonator, and hopefully sound better too. :evilgrin: