Well, the car is my daily driver so I'm going to take M.B. Doc's advice and just spring for a re-built pump.

Now, for my next question: Allpartsexpress shows two pumps that match my car. The unit from C&M comes without a reservoir, but the unit from ZF does.

The C&M Unit

The ZF Unit

Is this a case of the old-style vs new style reservoir? Or can I re-use my existing reservoir and save $120? Incidentally, the pump in my car looks like the ZF unit.

__________________
"It's not about how fast you can go, but how well you can go fast."

Bob in Richmond

'97 S320 (LWB), Ruby Red Metallic, 73k miles
'97 S420V, Smoke Silver Metallic, 155k miles