From my understanding, the ticking has more to do with wear then anything else, however, on this engine, it's more of an annoyance then an actual issue.
First off, what oil and viscosity and filter are you using?
For some reason, on this 3.2L there are certain oil filters that cause more ticking.
On my truck, I've used Bosch, Mobil 1, and a few others at some point; they've actually caused my engine to be noisey....I'm one of the few with the 3.2L engine's that's actually very quiet, mine does not tick; but I am the original owner too and that has a lot to do with it.
On my truck, there's only 2 oil filters I will use; Napa gold or K&N
For oil, I use Maxlife 5w-30 or the 10w-30; I refuse to use anything thicker, cause I personally believe the engine has to work harder, and I've never had a reason to use a thick oil - even with towing a heavy boat and living in the desert heat.
I'm not a fan of additives in the crankcase at all; for one, the crud didn't get there overnight, you also don't want to loosen it overnight....can actually cause more damage to bearings, etc by loosening up too much debris too soon.
IMHO, Rotella synthetic (blue bottle) at Walmart, is a diesel/gasoline engine oil in the 5w-40 viscosity...it is known for very good cleaning properties, but it takes several months and several thousand miles....IMHO, though, this is the best and safest way.
Do an oil change every 3k miles with a GOOD quality oil filter with this oil for a good year and see if things improve....if not, your best bet is to tear down the engine and rebuild if the noise bothers you....otherwise, I'm sure your truck runs just fine with or without the noise.