Hy Perry Dean, the frame pieces undoubtedly had numbers on them at one time, probably stencilled, rather than stamped, probably worn off or painted over years ago. Perry if you do some comparing and satisfy yourself whether or not they are the same, the part numbers are definately different, I learned very early in my career that part numbers are different for a reason, something about the parts is different, that doesn't mean they cannot be made to be interchageable. Good luck, and Keep the rubber side down.
