This is my thought as well, even with out the goodies I think I will have more then enough to move the Barracuda down a quarter mile strip respectively. And I am hoping to be more at the 2700 pound range. I am not going to have full interior. This car is dang near stripped right now as it is.
Up until now I had planned on running the stock single exhaust manifold. For those who don't know jeeps, they run a piped exhaust manifold on the inline 6, not a cast iron. My thought on this has changed, as I found out that the TJs (97 thru 2004) had a option for dual 3 into 1 manifolds. They were cast iron, but I have found that decent (non tuned pipe) aftermarket piped replacements are only around the $300 to $400 range. And a good set of matched tuned pipes are around $800 ish. My ECU is not capable of reading dual O2 sensors, but that shouldn't matter after the engine is warmed up with the 94/95 YJ ECU I plan on running. So just having 1 O2 sensor on the back half should be ok.