Maybe TurboXS:

STi & WRX Performance Parts: Basket Contents

Michael

 

You can also replace the exhaust with a 04-07 STI exhaust. It's pretty much the same as the stock XT one, except the center rear pipe has a smaller resonator, and the muffler has a little more boxer burble to it. Check your local Subie forums, they can often be found pretty cheap.

 

OEM STi is a replacement ive seen a good amount of people go for.
i had a custom made magnaflow 3 inch catback and the previous owner says hes got it all welded together for around $50 so its Forester specific.

theres also JNA's exhaust. theyre knockoffs of COBB but theyre fairly cheap and good quality. less than $250 for a catback

 

you can buy turboxs tbe from oakos for 850 shipped brand new. here is the link:

STi & WRX Performance Parts: TurboXS Turbo Back Exhaust, '04+ Forester XT

just put that in the cart and it will deduct the price to around 850 if i remembered correctly

 

You could come up here and dig my stock exhaust out from under a snowbank...I'll give it to you for free.

 

Thanks for the tips. I'll look at some of those links. JLee, I'd take you up on that if I was closer...thanks.

 

As you've been bitten by the rust issue, consider stainless.....but if paying the extra, ensure it is good stainless or it will also rust. Cheap stainless and salt don't mix too well, the salt wins.