Larry, if you want I can send you my '85 300D IP as a loaner for a couple weeks. Based on how fast my machine shop works it will be at least a month or so before I have the engine back and need the pump. Does your IP have the part on the side closest to the block with the wire coming out of it? The '85 model does and I know when I worked on my friends '83 300SD it does not have this feature. I've seen it's purpose described somewhere around here but I forget what it is for. I do know that it makes the nut closest to the block a pia to get to.

__________________
Jim