Hi All,
I think I've got the correct answer to this from another site - oldgmctrucks.com. Turns out that '51 was the transition year from cream colored gauge faces to brown. The brown gauges with white needles were used in late '51 production. The speedometer is particular to the late '51 in that it's an 80 MPH speedo as opposed to the 90 MPH brown speedo that they went to in '52. Looks like I'll replace my bad temp gauge with a '52 unit - don't know what I'll do if I need to reface the speedo. I'll worry about that later - plenty else to work on now.
Thanks to all for your input,
David Bush
