1964 Bricktop restore

I recently got a 1964 Model 5273 bricktop and it is of special significance for me as it was made the year I graduated high school. This old girl is in good running condition, but it is missing the flywheel screen part no. 604271 and ring 604272. I'd really like to get these pieces so I can do a complete restoration. Anybody got any ideas?

Perhaps you have errored on the model number? I believe a Model 5273 has a “suitcase” style shroud and is from the the ‘70’s.

There are two sellers for the 604271 ring on eBay. Search for: "604271 lawn boy" to ID those parts.