What is the best way to get an overdrive auto in a 67 Barracuda?

If he knows the owner of Extreme very well, then he should know they can be built to last. So that surprises me he'd say that. But anyhow, if you don't mind cutting the tunnel, then maybe you ought to look at a bigger trans. It's a big commitment either way. Doesn't the 4l80E need to be computer controlled? May not be a big deal but something you have to consider.