Just FYI, The Isuzu trooper with the 4JX1 has a bypass oil system on it.

The LF16267 will replace your VIC C-524 (the bypass filter) which is your primary. The LF3462 replaces your secondary which is a VIC C-307 (the full flow filter)

Alternative part numbers are Baldwin B1400 and Fleetguard LF3692 to replace the secondary. No other cross over to the primary filter.

If you are using VIC the system is pretty much worthless considering how poor they actually filter out anything smaller than 40 microns.