[KevinP73]

The oil pump on these motors is up front on the crank snout. Changing the pump is a major task as you'll have to remove the timing chains and crank pulley. You are fortunate in that you can drop the pan on the 4x4, no such luck with a two wheel drive.
Also the hardware on the lower end of these motors are one time use only. If you drop a bearing cap it's best to have the new rod bolts in hand first. The mains are incorporated into the crank saddle so you won't be able to check those individually.