[AlexM]

Thanks for both of your replies. I have looked at the L-31 and may go that route. One problem I don't like is that is has no provision for a mechanical fuel pump so I would have to add an electric pump. Mechanical pumps are more reliable.
I wonder if the heaters on 65 are bigger that other years? If the picture works, I added a white mark about where the dipstick would come up. As you cans see, the heater even overhangs part of the valve cover and the dipstick would coming up behind the center of the fan motor.
Yes, the power steering if off and early 70's truck. I would like to change the way the pump mounts even if I don't go to headers. I see various mounts online, most of which are not real clear how they work.