Gear Vendors overdrive

The tranny is all hyd (even going into o/d) it does have a two wire hook up to lock up the converter though (if you want to use it a simple push button will work just fine).
This will also work for pretty much all of the electronic transmissions as well. They will be a manual valve body but od & t/c lock up can be controlled with a simple toggle switch. Friend used to build 9 (?) speed a4ld's for the off road racers he worked with and they were controlled this way. You were able to split forward gears with the o/d unit and use the t/c clutch at will. The gear splitting worked well for these guys because the trucks were heavy & underpowered. They required valve bodies built specifically for my buddy, once they were cooked the racers got c4's and not one of them complained about the lack of gear choice.....