[cdan34]

I likewise have enjoyed the Columbia for many thousands of miles. I've used it in a '34 Cabriolet and 5w Coupe and currently building a '39 Lincoln Coupe with one. In all of these rear ends I've used 9 inch Ford axels with splined end gear. The only problem I experienced was the same as Bill with the brass washer. When these units are set up properly you're good to go.