Setting timing on 68 390 with Thermactor system

Any tips on trying to set timing on 68 FE motor with thermactor system? On my last 390 car, I didn’t have any issue in finding the timing pointer and checking/setting the timing. On a thermactor car with the air pump, I can just barely spot the pointer and that’s with the belts removed and not using a timing light.

Any tips from those that went through this, or does it require temp removal of the air pump?