This is not off a Camaro (only if GMC made them for a while graemlins/clonk.gif )
I have a hood ornament that looks like it came off of an old truck. It is the "GMC" logo but it is huge. It is approximately 19 3/4" long and 3 1/2" tall. It is cast aluminum and looks like it would have been attached with 3/16" machine screws. There is a number on the inside of the M. 2326143 Does anyone have any info on this number for GMC? Thanks!!! http://www.fidnet.com/~m26/gmc.jpg

Can't help with the #'s but it looks like it's off of a 1958 truck. Probably was used for several years.