[WE7X]

Since you already have the pan off, it would be foolish to not pull all the rod bearings and have a look at the crank journals.
Beg, borrow, or buy a micrometer that will handle that diameter crank journal, and measure them all.
That will give you a chance to see if any others are scored or badly worn, and you will likely have to buy a whole set of bearings anyway.
The manuals show the dimensions of a standard crank. You can gauge how much the crank journal is worn, and compare it to the others.

CAUTION:
Since this is your first 'rodeo', so to speak in this, realm:
Understand that connecting rod caps ONLY go on one way.
They are bored out of a casting, but the hole is not exactly centered between the rod bolts, so if the cap is put on 'backwards' the circumference of the bored hole will not necessarily be exactly round.
Nearly all rod bearing caps have some sort of marking, grooves, numbers or notches, that will indicate the correct alignment.
If you get them installed wrong, you Will do damage to the bearing and/or the crankshaft.
If installed incorrectly, you probably will not be able to turn the engine over with a standard ratchet. If the engine does turn over, but seem to crank very slowly, I would also suspect an incorrect bearing installation, even if it is only one rod bearing.
Do not attempt to tow the truck down the road to try to get it started.

If you are already aware of this possibility, then GREAT and I have wasted a few words, but if not it might save you a whole lot of frustration nd expense.
Good luck,
Rod Johnson
Issaquah WA

401M in a RM7500 chassis