Thanks guys for the help! I added some links to pics of the side of the motor and the carb. The # for the carb must be on the back cause I couldn't find it but I do know it is a Rochester. I don't know where that linkage is supposed to go and there's supposed to be a line that threads into to the front where it adjusts the lean and rich but there's no line to connect. Where is the # for the head located? The side plates are 4" on the motor below the spark plugs.

Can anyone tell me if the rear was swapped if the u joints and carrier bearing is visible but the rear still uses the lever shocks?

http://i245.photobucket.com/albums/gg53/sapo_trucker/P1250558.jpg
http://i245.photobucket.com/albums/gg53/sapo_trucker/P1310587.jpg
http://i245.photobucket.com/albums/gg53/sapo_trucker/P1250560.jpg
http://i245.photobucket.com/albums/gg53/sapo_trucker/P1310582.jpg
http://i245.photobucket.com/albums/gg53/sapo_trucker/P1310583.jpg
http://i245.photobucket.com/albums/gg53/sapo_trucker/P1310585.jpg