The 'air strainer'
was an assembly that wasn't meant to come apart, so it was only ever available complete.
Not surprised about the snorkel; it looked a bit kinked at the carby end bend in the pics. That only tended to happen when they were at end of life, and they always went soft at that point.
The points and condenser can still be had, but replacement with an electronic module eliminates any further routine maintenance, and can be done quite cheaply.
I would keep the original steel jet ramp for a pattern - I'm not sure how well aluminium will last there.
And a tip: after each use, turn the mower on its side, and hose the clipping residue out of the underside. The mower will cut better, and suffer much less corrosion. An old procedure, which has been almost lost since the takeover of Briggs engines, that don't like being tilted sideways.
