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As best I can tell, the part numbers for these pieces are 1674930 (right) and 1674931 (left). The part number for the right shows up on partsvoice. Before taking my word that this is what you need, it should be confirmed with the vendor. The parts book is difficult to decipher. If these are the correct part numbers, the book shows these for the 57 model only with different numbers for the 58 models. Mac
Thank you for that information!
Wish me luck.