they can be gotten with a 12point style crows foot.
https://www.amazon.com.au/Stanley-Pr.../dp/B001HWE9CA
the pumps not that bad to take off, pull the timing cover pull the engine around until the mark lines up with the timing point and then paint pen and scribe the mounting flanges.
takes about an hour to pull the pump off, and you'll appreicate the space and opportunity to gurney the block... the gurney will also quickly get rid of unwanted sludge.
