Denny,
That has been my understanding since I restored my '50 COE and researched and compared to my '51 as I went along.
Thus, I think 7998's truck may not be missing parts at all,
Kent

1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix