No, they make the 8’6” bed but it is a tight fit on our application, one CM vendor told me I’d have to bob (cut off) the rear frame rails.
The other non-problem is the bed cross members which are not really a factor because the truck sits so high. To get our spring packs (9/1) to compress that much the truck would be seriously overloaded, it’s just a CM cookie cutter thing they are so big and so busy trying to get someone to slow down and look at this has proven difficult so far. Either way one bed or another will be on order by the end of the week!
Pretty sure this an older CM SS 8'6" bed on one of our inspiration trucks (Napco 4x conversion).