Jeff's truck is a 1964 FC-170 and comes with a 226 flathead followed up by a T-90 and a model 20 Transfer Case. 4.27 gearing in the axles also. Have heard that the model 20 Transfer Case snuck into a few of the later model FC's, but not sure how many.
UPDATE: Jeff sold his FC to a gentleman named Doug Mykol in 2008.