What he said.

But if you are seeing lots of them and can get a good one real cheap you might try it. I've thought about it for one of my projects.

With the OD locked out its just like driving a 4-speed. The Corvette automatic-OD is tuned for fuel economy not drivability. In its stock configuration its never in OD in 1st, but probably will be when you hit second. If it isn't the spread is quite a closer, and your shifting may not seem real smooth.

I'd want to change that behavior so its only in OD when in 4th, perhaps by putting a switch on it.