Production #’s ?

I looked in my book and what i find isn't exact enough to suit me so i'll ask you gurus here. A 1974 Duster, 360HP, 3 speed in the floor, factory sunroof, buckets, 8.75 SG rear with fold down rear seat. My book gives the 74 year production #'s for the 360 Dusters (ALL) as 3969 units with no other break down. This rig might be rare but will need some more input to determine if this is so.
Small Block
Author: admin