The chrome grill option (386) was available on all 3000 series trucks in 1947 (a separate option (387) for the rear corner windows could also be ordered by itself). In 1947, there was also a Deluxe Cab and Equipment (390) option that included both the rear corner windows, the chrome grill, other bright-work, and other accessories.
By 1949/50, the chrome grill option (386) was still available by itself on all 3000 series trucks except for the Suburban. The Deluxe Cab and Equipment option (390) looks like the only way to get the rear corner windows (with all the other deluxe goodies).
In 1953, as stated above, there were no chrome or other bright-work options available; however, the rear corner windows option (387) was available by itself.
Many things changed in 1954, and various chrome and deluxe packages were available.
