Sorry about not chiming in... I had actually started a draft but never finished it! Anyway, I think it will be a challenge to find someone that makes a cover that doesn't interfere with the ram boxes. The ladder rack can be worked around the ram boxes. Anyway, I think you'll need to do some internet surfing to see if anyone has had the desire to make one like that... Remember it's all about marketing and what someone can sell, but if there isn't much ask, then they either don't make it, or they charge a pretty penny for it.
Perhaps FireMist has the way to go by using a shell with a ladder rack.
Good Luck!
Perhaps FireMist has the way to go by using a shell with a ladder rack.
Good Luck!