Gathered and added serial number information on my CJ2a for this site
http://cj-2a.com/parts_list/CJ2A_data.phpOK, I spent some time with a dremel tool, wire brush, degreaser and a box or rags, That's right, time for some jeep archeology. Serial numbers:
ACM body number on firewall gusset 56943
Frame number:64834
body number 64834
build number 64834
tailgate: obscured by bed liner
engine (original) MC96859 , head W5 648 800378 , block z641087-L-W12A-N1-OR-N2 non clock 5-21
engine (1947 donor replacement) J129467, (head is obscured), block 641087-L-W3A-N-LR-N2 clock style 6-18