also spoke with Chris and he explanded the electric valve is the same the reason to add the pressure switch in the EPC kit is it turns off the valve so it can refill rapitly

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4