This doesn't have to do with my stang, but hopefully someone knows. My winter beater that I bought failed the emission. Im 99% sure that i need to replace the catalytic converter. I had a shop tell me it would be about a $300 job. :surrender Can I do this myself? Does it need to we welded at all? or is it just clamps and shizzle? It would be A LOT cheaper to do it myself. Any info will help...

 

I dont know about what car you have but yea they will probably have to be welded in after the old ones are cut out

 

probably should have said i have a 93 (i think) olds 88 delta royale ls