[Stocker]

There were no K30s built in 1972. It may be a K20 frame with an HO52 differential, which is same as an HO72 except for brakes. There *might* be a difference in axles, but the pumpkins are the same. Some HO52s had the load bolt and some did not, while all HO72s had it.


Edit: IF it's a 2wd frame converted to 4x4..... I'm pretty sure C30 frames had larger (taller) c-channels than C/K10s or C/K20s, so you could measure & compare to a known frame.