Good luck with that one.
You could try a manufacturer like Borg-Warner saying you need it for a project your working on.
I needed a cad file of a high volume oil from Melling for a deep sump oil pan I was designing, the corner of there oil pump was in question for interference.
I sent them a picture of the problem, they sent me a cad file of the corner of the oil pump and a mounting coordinate system. Needles to say I took one of their oilpump out of stock and measured everything in Q.C. and modeled the whole assy in less than a day.