How many miles on the truck? Original flywheel? If so, your second symptom, at least, is a classic expression of the dual-mass (aka dumb-mass
) flywheel in its last days.
Before pulling the powertrain, pop off the flywheel inspection cover. Truck in gear, engine off, grab the part of the flywheel you can reach. If you can move it rotationally a few degrees either way, then the craptastic little bits that barely hold the two parts of the flywheel together are starting to fail. Word is, if you let it go, and the flywheel comes apart, it can
grenade the tranny case, which is not a good day. Recommended replacement is a single-mass, along with a clutch kit replacement; the OEM clutch fork is also known to be wimpy, and this would be an opportune time to replace it.
As for the brand/type of flywheel and clutch, all depends on how you drive. We went with Luk, one made for pretty-much stock power. Lots of other options, though, based on how you're gonna use the truck.