Sorry if this post shouldnt be here but I really need this.

Hello everyone, I had a catman catback installed and now the resonator pipe has rusted away and has a hole in it. The shop told me this cannot be repaired and i have to get a new resonator pipe/ catback. If anyone has one to sell it would be of great help. Thanks.

Oh and it would be great if someone had an OEM catalytic converter to sell (or give) as well. Or if its cheaper to buy the sensors? i think im getting very bad gas mileage because changing the cat to a straight pipe made the sensors all screwy(diagnostics say bank 1 and bank 2 sensors). My car sounds horrible..... Any help on this would be greatly appreciated. Oh and its for a 2000 SE.
Thank you