72 k 10 fleetside bed

[Baddad1911]

Hi guys , this is my first post and am a bit lost as to the remounting of my bed. I bought the truck in pieces partialy done as a frame off. The bed is almost done but im wondering if the fleetsides sit directly on the frame or are there mounting pads like the stepsides ? If there are can someone tell me where to find them. Lmc only shows them for the stepside beds so i am a bit lost. Seems like something should go in between but since i bought the truck apart i could use some advice. Thanks in advance for any help