Spun dampener

I am using an aftermarket timing tab, all the front of the motor had was a timing chain cover with no tab. Using an aftermarket aluminum pump housing. I was told that the starter was mounted in from the back on the pass side for a reverse, must be urban legend, could not find anything to back it up. I was given a starter, I do not know if it is from a boat or not. I will hit it with 12v in the am.

I am finding CCW starters used on marine engines.