I know some of you guys have swapped out your 700r4 for an SM465 or Th400. The wiring from behind the Speedometer to the tranny case is supposedly a stand-alone system and will not affect your computer at all. If any of you are willing to sell it I would appreciate it, as I am putting a 700r4 in a '79 K5 with no wiring for the lockup TC. I know they sell aftermarket kits for this but they are expensive, and I have heard from sources on this board that the stock system and wiring is superior to the aftermarket design. Thanks. Michael. 82 Toy LB with Marlin, locked, 36's,38's,35's depending on month/mood. 79 K5 with 3/4 ton running gear, 36's.