I have a 16k SG in my 1999 F250 CC SB. It had been used to pick up then return the trailer by the original owner, then removed and stored indoors. I got it for $500 with all the pins and rails ( in bed) then purchased a set of no drill super rails. I drilled the bed after installing the rails. I sanded and scuffed the holes then cleaned with paint thinner then taped off around the holes and sprayed with a good coat of etching primer and then painted to match bed. If you do a neat drill smooth the holes and prime and paint with a brush. I had a bed mat in and the rails in the bed were high enough to keep it. I just cut X's for the pins. Pull the pins for the hitch and then the pins for the rails and it's a clean bed! I really like the SG, don't have to get out to release the hitch. You need to get the correct capture plate for the pin.
A word of advice, don't get the universal, make sure the CP is aligned on the pin box and the shims are tight. I had a few issues develope ( due to idiot drivers in small cars not paying attention) I have decided to refit the CP shims with steel instead of a combo of alum and steel, then weld them in. Also adding a full circuit weld of the pin box pocket ( outside). I didn't have helper springs on my truck so I added a set of air bags (spec'd for 5er application) both of these took only a couple of hours each in the summer outside. Also had to change out the 6 pin connector to a 7 pin in bed and bumper and a P3 brake controller. Good luck.
MikeH