New Truck SPID

[Graham57a]

Hey guys, my dad is working on acquiring this old truck and he asked me to get a ballpark on the production number. Obviously it won’t be exact but I think the main question is “how rare is it to have a non Cheyenne bbc swb truck” Maybe some help on what the interior would look like with a custom deluxe. The truck had been altered quite a bit from factory so any info would be appreciated.