I'd do a gasket refresh...as in pulling the LIM is going to be necessary anyways when you'll be tossing a cam in there. Buy ZZP's cam install kit...with a new timing chain/dampner.
Cam I recommend.
XP or S1X...great cam choices...using Crow 105 valve springs and a 850-950 idle...very daily driveable. I daily'd my XP car for over 40k. Loved it.
Headers, yes...WB yes as well. With the XP or S1X a 3.5" would be a very mild pulley...especially for a DD, I don't see why a 3.3" wouldn't be out of the question either on stock timing...but a 3.5" wouldn't be a bad choice either for reliablility. Stock fuel system would handle a 3.5"/3.4" JUST fine.
Launched/Tuned correctly...I don't see why a mid 13's pass isn't possible over 100-102 mph.
