Has anyone successfully used the USCartool A500 Crossmember?

MileHighDart,
Check into a high low vac switch, (will cut 12 v power when on decel or hard accel).
I did this a long time ago, they were on some early 82-83 diesel GM trucks with the 700r4 trans. I don't know if still available, possible other diesel trucks with lock up T/converters in early to mid 80's trucks.