Old Yale Forklift - 10 000lbs capcity help with ID

Hi,
I hope this is old/interesting enough to qualify for this forum,

http://ift.tt/1EfiCBd

Can anyone help me figure out what year/model this machine might be? The tag is missing and I still haven't found any sign of a stamped serial number on the frame.

It has a gas V8 which really needs new manifolds, runs well for its age though! Any idea what engine it would have?

I'll take some better pictures of the engine tomorrow. Keep in mind the machine would have been red originally..

Thanks

Travis

Old Yale Forklift - 10 000lbs capcity help with ID