is there any way to remove my cat and put a new on? the one on right now i think is a factory one i think. what i think i could do...... cut the pipe where it the cat is, then get a bolt on one..if the new one is smaller, cant i get like a ?? what to call it?? a repair cupling to connect the two then to the cat??? can that be done?? i don't have a wielder, but i got a grinder. i think it time for a new one sounds like theres marbles rolling around in it when i give it gas, and when it idles in drive with the break on it sputters, and now it just started to almost sputter out when i give it gas, even worse on a hill thanks guy for spending the evening reading my problems,lol ttyl

If your #1 cat IS shot, now would be a perfect time to wheel it into a real exhaust shop (not a midas or Mineike type place) and have them hook you up with a new cat along with a new 2 1/4 inch exhaust and a turbo muffler... or a resonable facsimile.

What motor and what cat primary or secondary??

its a 2L. witch one not to shur? its the one right before the muffler.  as for the 2 1/4 system if i were keeping it i would do so, but i have to get rid of it  . cant tow my trailer i just bought. well if i put the v6 in it, with gears i could. just dont have money for that right now.