You need to grind that unnessessary flange off the inside of the timing cover to clear a rollmaster. No idea what it is or why it's there, but you can see it on the OD of the cam sensor bore.
While you're there, get a spring loaded roller button to replace the factory plastic button. Make sure the factory button hasn't worn a point on the timing covers rubbing surface.
..and do my oil flow mods while the cover is off.
and convert to a neoprene front crank seal.
the drop the oil pan and clean out all the timing gear teeth, replace the factory pickup with a Melling unit that doesn't have a trap door.
Bonus points if you modify the oil drain bung so that it'll actually drain out all the oil during an oil change.