Hitch Advice

[Corsair2]

We are buying a Solitude 305RE. We have an F350, Diesel, 6' bed, SRW truck.
We plan to buy a PullRite Superglide hitch.
We are considering the ISR Series Superglide 18k.
We want to be able to remove everything from the bed when not in use.

Is this the right hitch? What rails do we need? Anything else we should consider?

As always, we thank you for your help.

[LBnM]

The ISR series, as I recall, uses standard rails which would be left in the bed when the hitch is removed. The 18k is part 2900. The traditional SuperGlide has special (more expensive) mounts that leave only 4 holes in the bed of the truck when the hitch is removed. I have the 16k version of this (#4100) and the next step up is 20k (#4400.) I could have used the standard rails as I never remove my hitch. I just use a lockable tonneau cover on my truck.
http://www.pullrite.com/products