Distributor wire location incorrect

[JeepdaddyRC]

New to the M38A1. After reviewing the corrected manual, I see the plug wires are not in correct position. Number 4 is at bottom left (7:00 o'clock position).
Then moving counter clockwise we have 2, 1, 3. The marks on the flywheel for TDC line up when the rotor is at the #4 position.

Based on my reading the oil pump was not clocked correctly. Do I need to change it, or can I run the timing light at the #4 plug wire?

[wesk]

Your best course of action is to correct the timing from scratch. Usually incorrect initial oil pump to distributor timing results in a reduced adjustment swing of the housing for dynamic timing adjustments.

[JeepdaddyRC]

Thank you Wes.
Until I correct the oil pump clocking, can I time this engine with the timing light at the #4 plug wire?

[wesk]

I didn't answer that question the first reply because I have insufficient evidence to make that determination. You can try if you like but anytime we let our jeeps remain configured half-arsed we face trouble in the long term.

[JeepdaddyRC]

This will show my newbie status.
Does the crankcase need to be drained to remove and re clock the oil pump groove that mates with the distributor?

[wesk]

No