What Should I Do?

[LarryJ]

I'm changing my exhaust to a mopar borla cat-back and i was wondering if there is anything else i should do while i have my side sills off as i have a silver roadster with the beginnings of yellowing. i was thinking of going to high flow cats. is this a solution and if so are there any recommendations on which cats to go with(i haven't got my cat backs here but i think they are 3", someone else might know off hand). Also, should i coat the inside of the sills with something while i have them off. Any suggestion would be greatly appreciated.

 

[Viperoctane]

LarryJ,

The mopar catback is a borla catback with different tips, and yes its a 3 inch exhaust. I would recommend getting Random technology highflow catz(3 inch ). I have them on my car for 12000 miles now and the sills are much cooler and they give a louder sound too. My friend has the same setup as mine but with stock catz and mine sounds much much louder. Good luck with your upgrades.