Depending on your budget. On the low end you can get an OBX off ebay for 175.00, without a cat of course, which you can have someone fabricate using your stock cat and pretty much keep from throwing CEL's. On the high end 700-1k on a Milltek, RMW,Mynes and the list goes on.
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AliceCooper Club Coordinator
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I believe I paid a local muffler shop $150 to install the header along with taking off the stock cat and cutting/welding back onto the OBX. In hindsight, it ended up being one of the best bang for the buck performance modifications I've done.
In my opinion, since you have to get the crack repaired, you might as well spend a couple hundred extra bucks and get a new OBX header and simply have the stock cat welded back on. I'm not sure what exhaust setup you're currently running, but I have a relatively loud Magnaflow exhaust and couldn't tell a difference in the loudness of the entire system after the OBX. -
If you want it I have a header that I took off my track car. It's in good shape and is yours for the cost of shipping. I'm not sure what it is but it's a four into two into one affair, pm me your phone number and I'll send you a photo.