You said "above", then said "left". There can be a foot starter hole, trans brake hole, previous owner holes, and brake fill hole. The 4 x 4 is not in the area you describe. Ist year for open drive shaft, don't think any factory 4 X 4 in that year. Is it a factory looking punch hole or a hack job hole? Like Red says, lotta owner add-ons like home made snow plow blade lift, aftermarket throttle linkage holes, oops! wrong place holes, etc. To be specific: No NAPCO 1/2T until 55 when open drive shaft started in them, before that 3/4 and larger had NAPCO. No one knows exactly when the 3/4 and up started. In 1955 Napco sold a kit to dealers for adding 4X4 to 1/2T.(only four holes needed to be drilled)the factory built 4 X 4's using NAPCO were 1956 for GMC and 1957 (as stated) for Chevy. GM redesigned their chassis in 60 with coil front on 2WD and leafs on 4WD and designed their own 4X4 system, albeit, still had devorced Xfer case like NAPCO. I think they used Rockwell xfer cases then NP 205..... But basically, no more NAPCO, Napco sold out to Dana which is Spicer.
Last edited by bartamos; 07/30/2009 12:36 AM.
