Quote Originally Posted by matt5112 View Post
OBX headers require major modification to work.

Skip them and get the SSAC's

and yes, it'll still work on the 04+ cars.

If you dont have testing, and aren't worried about the fine, don't bother buying a cat, just use the pipe they come with.

If you're concerned about it, get a 3" I/O high flow cat.

theres only a small sound difference between cat and no cat so I wouldn't really worry about it.
Thanks for the quick reply!

For the install what am I going to need to complete it? O2 extensions I assume? Gaskets?

That really makes up my mind, I'm not going to mess around with fitment issues. Being an LT1 guy I know the drill all to well.

Out of curiosity why do they market them for the 97-03 it they fit the 04+ cars as well?