[67C10Step]

Originally Posted by Accelo

Looks like your w/p and crank pulley line up. Their are several different offset pulley's for the alternator. You may also be able to add a spacer behind the one you have. However you may run out of threads. Some of the factory ones are recessed on the end for this very reason.
The valve covers are likely the same height but the corners are rounded more. I was thinking this may be the difference?

Note: The upper alternator brace bolts to the rear of the alternator.

Thanks for that last note. Never noticed it in photos before and this was the way it was set up when I first got the truck. I will correct that issue this evening!