I'll look into the valley pan grommet. that is the one I need.
here are some shots of the 74 SD engine I'm rebuilding.
As received. Ewwww
after soaking w/ grease remover
Together
ready for paint
primer
Paint as close as I could match it
Installed in car..hooray. The main objective of this project was to return the car to the road after a 23 yr hiatus due to internal engine problems. the remainder of the car will be attended to at a later date.