68 K20 needs ID

[Dustoff 7-9'er]

I'm new to this site and have lots of questions about my 68 k20 lwb with a K297 transfer case (?) and a S2101 (?) 4 speed w/granny gear. First: it has an odd ID number that I have not been able to decipher. Chevy's local dealer had the same problem: # KE 2 48Z 133724. Any ideas? Second: It has a power take-off (RNG 7-11?) and winch tucked neatly under the front bumper. How can I identify it, there is no visible ID plate or #'s? Lastly, I'm located in Spokane Washington and would love to find a resident expert or enthusiasts for this vintage vehicle. Thanks.