SO I this is my first post here, but this seems to be the place to go for answers on a 200R4 trans. I am putting this trans into a 1978 corvette with a 1986 TPI engine and I am trying to determine the best way to lock up the torque convertor. Engine is mostly stock, to be used as a driver not a racer. Not really interested in a vacuum switch or toggle switch, too much to explain to anyone else driving the car. SO I came across this kit from Ron Francis TC 75 and it appears to be just what I need. Has anyone used it before and are there any pros or cons to it. My other option would be to hook the TC up to the ECU that came with this engine that also had an automatic ( but not a 200R4), if that will work. Thanks to anyone in advance for taking the time to educate me!