Well its been awhile since i have changed my cats and i really need to now since i just put down 360rwhp with my new 224/114 cam. Not very happy about it. Well my question is how would i go about making a custom flange so that i can swap them out when i go to the track? My plan is to gut the ones i have now and make them both so i can swap them out whenever i want. i have hooker lt's and a mufflex 3". Any help as to how to go about this would be appreciated.

Thanks

 

Any good muffler shop could do that for you.