<strong>1964 CJ-3B (M606)</strong><br />
The answer to fitting the taller and more powerful F-head four into the CJ was twofold: the CJ-3B was one and the CJ-5 was another. The CJ-3B appeared in 1953 as a stopgap, but amazingly, both were kept around after the CJ-5 debuted for 1955. The CJ-3B soldiered on to '68, sold mostly commercially. Daniel Walton's restored '64 is a government-spec unit often known as the M-606. These military variants were often given to friendly governments under a program called MDAP (Mutual Defense Assistance Program).