I've searched the forums and can't seem to find much info on shorty headers. The two posts that I DID find were negative. So the question is: With a stock H-midpipe, would a $300+ investment in shorty headers be worth it?
Forget about the shorties and go longtubes. They actually produce gains that are visible on a dyno chart - unlike the shorty's - and if you find a shop that knows what they're doing you can get it installed quick. Labor on my install was $250. My driver side header scrapes, just barely, and not even enough to see any scrape damage on the header itself. If you get one that bolts up instead of a weld-on set up then you can fix any damage that may result by just re-tightening the bolts/flange.