I once saw someone on this forum has changed their stock exhaust pipe to a better free flowing tubular exhaust header for these models. Can anyone tell where I might be able to get one to replace the restrictive stock multiple cats?

 

Yep, go to the top of this page and click "search"

Alternatively, you could press alt + F4 on your keyboard at the same time.

 

cool I will check it out!

 

lol what you are speaking of is the y-pipe? It connects both exhaust headers and brings it down to a single pipe and connects to the catalytic converter on the other end. They have cheap Y pipes on Ebay and I emphasize cheap because it is cheap stainless and thin gauge metal but it is fine for most purposes yours included im assuming. THey also come with headers as well but those are troublesome to install