CWJ===
I don't thing it's missing anything. The reason it looks like it's missing "the pump" is because it is not a standard GAST pump, but rather manufactured by GAST for one of their customers for specific purpose that doesn't require an intake ane exhaust filter, thus smaller pump housing. It takes the same vane rebuilding kit as the other ($375) pump. This info is from
GAST discussion forum by one of their own technicians.
I did buy a
$5.99 intake filter to go with it. Do I need an exhaust filter as well? Can't think of a reason why.
Will be able to tell a better tale when I get it, should be this coming Saturday.
Till then my friend.