dimensions on spacer behind underdrive alternator pulley

Looks like I'm going to have to get a spacer made for the back side of a scp underdrive alternator pulley I just bought. If someone could get me all the dimensions for the spacer used for the 94-95style cars I would be very thankful.

If one of you guys that has the early style alternator still could be kind enough to send me the spacer you received with the polished underdrive pulleys, that would be even better

Thanks,
Chris