Front brakes.
I plan to trailer the truck to the track and only occasionally drive it to street race or cruise to a show. Before actualy removing them I would turn my linelock around and see how she stops without the fronts working. I know it isn't ideal but this trucks rear disks probably have more stopping power then a full set of factory brakes on a f-body and certain as much stopping power as an old muscle car with drums all the way around.

