I don't know if a full restoration could be achieved.
You could certainly get it looking presentable, but I think another base would be needed as well as another engine cowl, unless you don't mind using car body filler and painting it up to make it look new. Even the black vent above the engine head has plastic missing.
In the right side view you can see where I have filled in a 1" hole in side of the base with Selleys Knead it epoxy filler. This mower has has a hard life bodily, but won't die.
