Anyone know off the top of their head the socket size needed for the front crank bold on 5.9 magnum? (1998 Ram)

It appears that during my 2 yrs of being laid up, that the truck motor may have froze up. No sign of water/antifreeze in oil, but not sure if the rings froze to the walls, or the starter is just frozen. It clicks, but no attempt to turnover what so ever... even with a good battery & fresh charge out of my Challenger. Sprayed some wd40 in the cylinders and let it soak a day or two; no change.

I need to move the truck to get some tree's taken down and now it's dead (figures) and to make matters worse I have a boat still attached to it. Trying to avoid dragging the whole shooting match out of the woods (between trees) with my 2500. (likely nothing good will come of that)

So I figured before I go out with a handful of sockets, and risk dropping one in the mud under it... I'd ask here 1st, so I can take the correct one up in the woods right off the bat. Hopefully the crank will turn with a breaker bar & it's just a dead/froze/rusted starter. (fingers crossed)

Thanks
R