They are functionally the same.  As you noticed, the levers are different.
I think the most significant difference is the throttle cable bracket.  If
you don't have the right one for a Vanagon, it's a pain to fabricate.  Some
cars have a bunch of junk attached to the pump for things like upshift
lights and cruise control.  If you have any specific questions, ask away.  I
have an '85 diesel Golf and 2 diesel Vanagons in the driveway to compare.

Mike Snow

>Other than the shape of the lever is there any difference between  Gulf and
Vanagon diesel injection >pumps?