I bought a 700-R4 lockup kit a while back. It uses a pressure switch that closes a circuit that applies current to the TC solenoid when it senses pressure on the 4th gear circuit. I would like to see if I can make this kit work on a 200-4R. The expensive 200-4R lockup kits put a switch on the 4th gear pressure channel on the valve body, inside the pan. Is there an external 4th gear pressure tap on the 200-4R? The 700-R4 4th tap is behind and below the 2-4 servo, although the later ones lack this and one is supposed to drill and tap the servo cover for 4th line pressure. Thanks for any advice.