I bought a 505 kit from them over a year ago and had the same problem and when I called and told them the rods were chrysler width and the crank was chevy width they didn't think I knew what I was talking about and said they would have to do some checking and call me back. They called back and said I was right and to send the rods back and they would cut the width to chevy size. The main reason I bought the kit from them was to avoid this kind of problem. Im thinkin they've only sold two of these kits in over a year or they would have corrected this problem.