I have the Monroe catalog in my hands right now, no listing for rears for a '50. It does have a listing for the fronts, though. what I would suggest is to remove them, and measure the lengths, both at full compression and full extension, that will ensure that the replacements will go the full travel of the suspension. You wil also need to tell them the type of mounting on the ends. If you get me the dimensions, I can see what Monroe has listed, with both Monroe and Sears numbers.