71 water pump on 69 block

You will be able to see the marks (just barely tho) but enough to time it (& some paint marks on the dampener in addition to the "slit" and a round dab of paint on the tab "zero" helps with this & you gotta aim the light just right. I added paint marks for (10 (15) and (20) but admittedly next time in that same situation I will add a pointer on the side that the dampener slit is on at TDC if I have to mix/match pump and cover to match the rad outlet