"Truck only" parts on early ones?

(head banging against brick wall) figures someone would respond that way....
Lol, that's OK, We just like to see what's being discussed....really cool find to grab. Other than chassis specific oil sumps & shot-peened forged cranks on HD Trucks, the cartridge style filters were used early & on industrial stuff, I'm sure @slantsixdan has the app minutia/breakdown for all of those items...if He's not too busy baking Christmas cookies... :lol: