ok my cat plugged on my 95 blazer thats not the prob tho i got the nuts loose and all i just cant get it to twist off from the front pipe its the stock cat and is rusted any tips maybe heat it up or somthing

 

If it rusted on you may need to cut it off.

 

was hopein i wouldnt have to cut it cause its one of those cats that has the pipe on it that connects to the muffler i direct fit one i belive the call it not one were u have to weld it on

 

Mine bolted onto the y-pipe on one side and the muffler on the other. When I replaced just my muffler I used a torch and heated them off. then they just snapped off and I was able to use new nuts/bolts. When I had to replace my clogged cat I tried the same thing and couldn't get them off so I just cut it off and clamped a straights pipe in place.

 

PB Blaster