5.2 Magnum swap into 70s-80s truck

So is it as simple as supplying 12 volts to the computer? I know I'm over simplifying that, and my 94 trans is the 518, still hydraulic controlled, correct? I can use the dash switch to control od/torque converter lockup as well. I'm still in the early spit balling stages here just seeing what's involved. That little Mazda must haul!
yes your 94 trans is still hydraulic controlled.just electric convertor lock up,in 94 dodge called this trans a 46rh not a 518.....just some info