Small block accessories

[i82much]

I have a 1972 K10 that has been converted over to a big block. As a side note, I ran the head numbers and it looks like it is a 1966 oval port 396, something you'd have found in a Chevelle or a Corvette.

Anyway, I don't particularly see any need for the big block. If I wanted to go back with a small block setup, are there differences between the truck vs. car accessories and such? Would a later year truck setup work? Just looking for some ballpark information.