mounting bed/ need help

so we bodydropped my bed 5 1/2 inches. so we built square tube spacers to keep the bed leval and no one around here sells bolts that long and size. need my bed mounted so i can drive her, any ideas how i can mount it? any help would be great guys, thanks

We used round tubing with a nut welded inside of it at the bottom so we could use shorter bolts or reuse the factory ones. Is the square tubing you used large enough to do something similar?

use allthread with washers and nuts

ok so i welded a nut on the inside of the tubing lined it all up and welded them on made sure they were in the rite spot, go and put the bed back on and they dont line up. some how they must have moved or something. does any one have pics on how they mounted there bodydropped beds? mine is over bodydropped so i didnt have to cut the floor out.