So it does not seem I have any bolts in those holes. not apparent oil leak either? Is it possible they are not tapped all the way though on my block (approx 1987 block). Its an awkward angle to see now that the pup is back on and the fuel line goes in front, but there are no bolts and I inserted something in the hole and it seemed to go in a little way and then tap out in both holes. Also used the phone for some photo attempts and I see the holes do have thread in them - no visible bolt inserted
