To eyeball IP timing set the crank pulley to 14 ATDC then look or feel for the lug in the IP. I don't have a pic to post but look for a bolt head that takes a 17mm wrench/socket on the driver side of the IP. Points almost directly sideways to the left front shock. It might leak up to a half teaspoon of oil. Nothing to worry about. Use a mirror or slide a stiff wire up and down in the hole. If you don't see anything or feel anything, give the crank a full turn.

I'll look for a picture...

Sixto
93 300SD