This was offered to me. It's a 2-speed rearend, but may not be original to the '64 C60 it currently resides in. Didn't think to measure the brake drum width before I left. Can anyone ID this rear end and/or tell me what ratio might be in it?

Numbers on the pinion support:
http://i683.photobucket.com/albums/vv198/aaa-111/trucks/Goliath/2011-10-07175506.jpg

Horrible shot of the back of the axle:
http://i683.photobucket.com/albums/vv198/aaa-111/trucks/Goliath/2011-10-07175358.jpg

Front of the axle and the vacuum actuator for the 2-speed:
http://i683.photobucket.com/albums/vv198/aaa-111/trucks/Goliath/2011-10-07175512.jpg