Headers and accessories
I also got the GM steel gaskets p/n:12558573
You'll need a pair of o2 sims or reprogrammed pcm, LS1 Edit, HP Tuners, etc. for the rear o2's with that Y pipe.
You'll also need a pair of band clamps for the headers.
Here is what the headers & TSP ORY look like:
http://nick.vettextc.net/Headers/

