I am looking for a harmonic balancer pulley for my 235 in my '58 Apache. The current one does not have a smooth pulley groove; looks like it has been plagued with rust and I think it is the root cause for premature wearing of the fan belt. Looked online with NAPA, AUTOZONE, Rock Auto and Advance Auto, no luck. I would appreciate if anyone knows where one is located and the best way to change it out without removing motor from the truck.