I will have a new batch of custom 2600i (SOHC 12) headers soon. Everybody knows how hard these are to find. PM me to lock one in. I may put a few on ebay. Price is $299+shipping
The header is designed around the firing order of your engine. The down tubes are alternately paired to separate the exhaust pulses of the engine to increase horsepower. The difference is dramatic and most noticeable at mid-range to top end. I can send you a pic if you PM me with your e-mail address.
I would offer ceramic coating if I had a reliable powder coating company in my area. Unfortunately they’re not on the same level as Jet Hot.