[vin63]

I used a push/pull Flaming River master disconnect switch that was a back up for my old drag car similar in type to the one in the OP's post (bus bar switch). It's mainly a theft deterrent for my C10, but also meets tech in case I run my truck down the drag strip since the battery is mounted on the frame in the rear. The cutoff switch is mounted on a bracket on the driver side rear of the frame and the rod is easily removable. The hole in the bumper was from the truck's previous owner, so I kept it for the push/pull rod.