I have a drivetrain out of an 83 K5 that I plan on putting in the frame of a (No yelling at me!) cj5. The drive train is a 350, 700r4(out of a '90), np208 with fixed yoke, and a couple of empty axle housings. My question is about the lockup on the 700r4. I want to have the overdrive with lockup to drive to the places I want to play in the dirt since I don't have a decent tow vehicle. I know I can hook up a switch in the cab to lock up the torque converter manually, but can I still set it up to work like it would in the blazer? i've got the vacuum hookup and everything, but I was wondering if anyone could help me with the electronics?