Me too. I'm a decent DIY mechanic, so worst case scenario I'd replace the entire front bank of the rocker arms, and lifters. Based on what I've read, rarely should the camshaft also be replaced unless it's seriously damaged. So I drive my Mini to work for the next week or two. Oh darn...Fingers crossed it's the injector !
I've gotten pretty good at removing the intake manifold in order to get to the spark plugs/coilpacks in less than 20min over the last couple days, so removing the valve cover, and getting to removal of camshaft, and replace rocker arms/lifters shouldn't in theory be terribly difficult.
When I went to Oreilly's the other day to pick up the spark plugs, I decided to pick up the Dorman upgraded filter housing also, as I could see small amount of oil accumulating in the V of the engine. I made a comment to the cashier that my Jeep has almost 180k miles, and he was rather impressed, but also wondered why I'd spend the money for an upgraded part instead of just getting another. If I want to drive this thing for least another 4 years, and then have 250-300k miles on the thing, I'd rather spend the money now so it's taken care of. Hell, it's cheaper than buying a different car.
Funnily enough, on a side note, my parents traded in their 2007 Chevy Tahoe that my Dad has had for better part of nearly 15 years, and they traded it in for a 2013 Grand Cherokee Overland w/ the Pentastar. My Dad, a former city Bus mechanic, has also read a good bunch of the Penastars, and we're both in agreement that overall, the V6 is a robust powerplant with only a few quirks (rocker arms being one of the most common).