I did the 5 lug disc brake conversion on my 56 several years ago as I didn't find any
suitable 6 lug conversions at the time. I also had the rear axles re-drilled as Dan has
stated. Everything has worked well with this conversion.
There now are several aftermarket suppliers offering 6 lug conversion kits. I have installed
them on similar trucks for customers and they were able to use the stock 15" wheels.
Fred
