Try ereplacementparts.com; they show several housings that should work
Thanks for the link, but their (very nice) site was one I referred to in my web searching. I called and they weren't aware of any substitution - they apparently work from Skil info.

In an ideal world, any such derivative parts if they existed would
continue to be listed with older models they would support, but it
just ain't a gonna' happen...

Maybe someday somebody will invent a big electronic storage device, able to cross reference and search. Presuming the data gets entered.
Even if just the auto dealers and parts places bought one to cross reference trim panels that fit many year's vehicles and any color it would pay for itself.

Then again, if we consumers didn't accept a bell this year and a whistle the next year on a 'new model' . . .

The reason explained for obsolesence was that it's more expensive to repair than replace. Three screws hold it on (plus moving the rubber bumper over); a new saw is $70. I'm in the wrong business.

Thanks to the forum for letting me jump up and down. Now I gotta decide what color to get if I replace it.

Part #
2610341304 MOTOR HOUSING Obsolete - Not Available $12.65
(Skil calls it an upper guard assembly)