Buzz'n,
"this truck is not a deluxe cab which leads me to believe that the chrome option was available on some non 3104 trucks or could be ordered"
In 1954 and I bet in 1955-1st, there was RPO 393 Chrome Equipment, which included chrome grill, chrome front bumper, and chrome hubcaps.
That option was separate from the 5-window RPOs, such as:
RPO 390 De Luxe Equipment (for bigger trucks) did not include the 393 chrome pieces
RP0 430 & 431 De Luxe Cab Equipment (included two-tone interior(four combinations by late '54) and other goodies, but not the 393 chrome pieces
So, your chrome grill could easily have been delivered as you describe.
Tim
