Is mine the only exhaust that's entirely welded into place or what?

How are people removing their center cats...

uhh...i think that u have a problem but there are 6 bolts and springs holding on the center cat and the muffler is connected by one bracket with a 14mm bolt, then the front 2 cats are welded to the exhaust pipe.

yeah, you'll need to find an exhaust shop or someone with a lift that will let you replace it. I'm not sure if it would be a good idea just to gut the convertors, as that would give you a 1.78 ( i think) pipe into a 3 inch or so, then back to the 1.78 or whatever, that might not be a good thing. I am going to simply replace all of the piping with 2.5 or 2.25 inch all the way back into the stock muffler, then eventually replace that with a flowmaster Dual in/ out to create the true dual exhaust, which i really look forward to. I think the stock SVX system has good lines, but with that small of pipe, there has to be some power hidden in that. :D

Replaced Resonator
 

My Resonator was causing some nasty sounds in my exhaust so I replaced it with a glass pack, and with my after-market muffler, my SVX now has a subtle throaty sound, kinda like the 350Z's.

It's funny, when I first got my SVX back in high school I wanted the exhaust to be much louder than the stock exhaust, but NOW I like that my exhaust has a more quiet roar. Acceleration sounds so lovely!