didn't see the o.p. till now.
i've been considering the royal/summit sport/utility bed for more than a year.
it is a cali product so purchase and install should be relatively easier for u.
i met a camper with one last year and fiddled with it up close, also a ford.
then a few months later met someone with the ge'em version.
there IS adequate space for a genset and aux fuel and compressor in the forward doors...
the compartments aren't as deep as the typical flat side models...
and it is NOT as well made as the other 3 top/common brands.
but it looks GREAT upclose and ON the truck.
the royal is just a few inches taller
than the stock bed as i recall.
it does weigh significantly more than a stock bed even with a shell...
and the load is further away from the truck center, which is bad for handling
so IF you are anywhere close to rear axle/payload limits already, that becomes an issue...
not so much on the 350 but on the 250s.
i couldn't reduce my payload enough to make it work.
and didn't want to loose the dollar value of my current bed and shell.
also,at the time i corresponded with royal, they did NOT have a good solution for covering the center section (like a little shell) where bikes can fit
and they weren't sure how much longer they would produce this model, they were waiting for info the 2008 trucks...
on the ford side the 2008s use exactly the same side contours as the last model...
so royal would NOT have to change much with this unit for new the new superduty (exhaust heat would be a big issue)
so g-c, if you follow up with them please let me know...
i still really really like this utility bed...so much so that i've considered ordering a new 350 truck sans bed.
and doing the royal addition up front.