If you are going the cheapest route, doorman is suppose to be a quality product. I have no experience with them but that part is what a couple part places around here recommended, but the price here in Canada is higher and I was going for the magnaflow until Josh price matched for me. I heard for the h3 manifolds pacesetter is total junk though, with complete separations of welds.
Good luck

 

Dorman makes quality parts.

Rockauto has the cheapest price I could find for you
.
DORMAN Part # 674-703 {#12571601} Manifold Converter

Enter Code: 2008630117811653 in the "how did you hear about us?" box and get 5% off = $249.82 shipped

http://www.retailmenot.com/view/rockauto.com?c=5537938

http://www.rockauto.com/catalog/rafr...partnum=674703

Manifold Converter
More like a complete kit than a single part, many of our Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a direct replacement, the exact fit adds another layer of efficiency and convenience.

Alternate/OEM Part Number(s): 12571601

DORMAN Warranty Information
Limited lifetime. Manifold with Catalytic Converter 5 years/50,000 miles

 

Thank you much hummerz for the code you saved me some money. Sorry for bringing this back to the top but I just wanted to let everyone know I DO NOT recommend the dorman manifold. It is a cast manifold which I knew that but it was a very cheap cast. The thing broke before i even drove it, around where it bolts to the exhaust pipe. I sent it back to them and they said i should get a refund. Also the donut gasket that comes with it is junk which may be why it wouldn't tighten right and broke. Ended up getting a bosal stainless steel and a gm donut gasket and it was a different story. Fit like a glove and you couldn't break it if you tried.