Are you guys saying that the electrical lock up switch is completely manual? I would have to lock and unlock the TC myself, sounds like a pain. This is why I was leaning toward the hydraulically (sp?) controlled unit.
Nope, that's not what I'm saying. The switch is optional, and only necessary if you want to lock up the converter in 2nd or 3rd gear. When you put on the brake, the converter unlocks.

Don,

I don't know how to answer your question. I've studied how my setup will work, and never considered a hydraulic converter. I have the electronic controlled version in my Vette (stock), so I stuck with what I knew. The 700R4 in my Vette is not really a computer controlled transmission. It's a standard automatic with an electrical lockup. The pure computer controlled version is the 4L60E. The R4 in my Vette has 120K miles on it, and it still works fine.

Oh, and the electric speedometer I have doesn't care much about gears. There's a calibration sequence that you set while driving.