I replaced the ball bearings in my '55 2nd 3100 with a complete roller set I got off ebay. I am more than happy, the set was about $78 and included seals. I am running radial tires on my truck. I remember back in my hotrod days in the 60's I would have given my right one for a set of rollers for the front of my '55 chev sedan. I had reversed rims and wide oval tires, they tore up the front bearings.