Inherited a 1962 C10 in parts - need some help

[Ventura65C20]

I inherited a 1962 SWB in parts (cab VIN shows it was originally a 2wd SWB Fleetside) but the frame is a 4wd. My father in-law bought it in the 80's and took it apart and now I'm putting it back together but want it as a 2wd. The frame seems to be from a 67-72 4wd. Can anyone help confirm the frame year? And is it worth converting it to a 2wd or selling it to someone and buying a 2wd frame? Appreciate any input or help. Thanks!