Powermaster 8172 alternator

Hi there, installing a 1 wire alt on my race car. 74 duster factory wiring deleted. E fuel pump, E water pump, E 16 in fan, MSD ign with 7AL box. 2batteries in the trunk. 2 Post kill switch. So if I read the NHRA rule right I run a wire from alt to pos side of kill switch. I want to put a cut off switch of some kind while running the quarter mile then be able to switch it back on after the run. It's a 55 amp alt. So a toggle switch won't do. What do the guys that did this suggest. So my thinking is run wire from alt to switching device then to kill switch. Thanks. Kim