Macybaby was kind enough to sell me the nose cover and metal feed dogs from her model 645 she posted previously. Both parts fit perfectly. Here's a couple pictures.
The first shows the feed dogs side by side. The metal ones from the 645 are on the left. The original rubber ones on the right.
The second picture is of the bottom of the needle plate in an attempt to show the hollowed out area around the feed dogs. I'm not certain but that might be necessary to clear the little "wing" on the metal feed dogs.[ATTACH=CONFIG]456083[/ATTACH][ATTACH=CONFIG]456085[/ATTACH][ATTACH=CONFIG]456087[/ATTACH] The last picture is my machine with her brand new nose. It fits perfectly right down to the color.
Rodney