salvage one from another 03. cut out the chunk you need, put it in place.
What he said! Just doing that will drop your EGT's by a 100 or more degree's!!
Never shall I fail my comrades. I will always keep myself mentally alert, physically strong and morally straight, and I will shoulder more than my share of the task, whatever it may be. One hundred percent and then some.
You can gut out your cat, but I strongly suggest to not destroy the only cat you have. In the future, there is a good chance you will need it on the truck for smog. You can buy another cat used off another truck.
Or you can buy delete pipes. I have delete pipes and I am very happy I did.
You can also have a near by exhaust shop make delete pipes if it is cheaper.