Catalytic converters came along well before 2001. I have a 1984 Jeep, which has a catalytic converter on it and which I kept around, because I planned on using it to ctb, but after finding SaSu and doing some reading, I realized that the car method was a bad idea. Anyone considering CO (my method BTW) needs to consider a differnet means to generate CO. A few people have had success using small generators in their cars, but, as previously said, you will have to tolerate the other noxious gases emitted. Charcoal is probably the best bet if you're set on CO. There's a way to generate it by mixing a couple chemicals together, too, but the chemicals may be hard to acquire. There's a lot of info on here about it CO. Reading is the best thing you can do right now. A lof of reading. CO isn't something you want to screw up because it can leave you in really bad shape if your ctb is not successful.