dan woodland
+1y
Gotcha. You'll need to support the filler neck, secure the taillights and I'd suggest keeping the bumper. I think the bumper will help if you get hit in the rear end because you won't have the bed to help absorb some of the crash energy.
If you "lower" the filler neck you may "slosh" fuel out the the tank wasting fuel and causing a potential hazard.
I don't know where you live but some communities have rules for pickup trucks regarding the bed or going "bedless". Some require you have at least a floor. For obvious reasons, in part it stops the truck from throwing things into the air where other vehicles can strike the them.
Another reason I mentioned making plans first