[offroaderdodge]

i just replaced mine to pass a safety inspection.left one was a beast to replace,the nut inside the frame tore loose from its mooring.
pull carpet back,a dimple in floorboard directly above bolt indicates where to bore a hole with a holesaw-i used two inch holesaw and a cordless drill.

then i welded the nut to the frame,while it was still hot i hit the bolt with the impact and got it apart.
it doesent knock on the floor anymore.