Hi! My '93 944 Turbo has lost lots of power, and I suspect a clogged-up cat. The pipe coming to the cat has broke off at the joint on two occasions, maybe because of the back pressure. Also, at about 3500RPM the cat rattles, as if something was loose inside. The car is 62K Miles, but I've read posts of people with cars over 200k miles still on their original catalytic converter. Did mine go earlier because of the low quality gas found in Colombia (back in '93 some places in the country still sold leaded fuel)? If I need to replace the catalytic converter, I would appreciate the board's help on the following:

1. What brand should I buy? (aftermarket vs Volvo brand)
2. Are there any direct fit aftermarket converters for a turbo?
3. Where can I get a good and inexpensive cat?
4. Are there any other exhaust components that I should also change?

Your help is, as usual, highly appreciated!

Regards;
JGCBAIZ