yes on AD, next series is TF - "Apache" just means light truck, 1/2, 3/4, 1T and was used in marketing from 58 to 62 or 66 - bigger trucks those years were Viking's and Spartan's

yes CDN numbers are different
no the cruncher doesn't understand them
no there's no CDN cruncher, but Scotts catalogs have some info on CDN numbering in the back

the 55-7's still used the 13xx series designation, which changed in 58 to the US series style
58-9 Chev #'s are this pattern:
1st # =year [8 or 9]
2nd,3rd#'s = series [31short 1/2 or 32long 1/2, 36 3/4T]
4th, 5th = model [04 p/u, 05 panel]
6th = # of cyl [6 or 8]
remainder= sequence #
so 831046xxxxx would be a 58 short 1/2T 6 cyl

my camera has started refusing to wake up - doesn't take the first picture half the time so I just take the first picture twice grin

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics