The brushes and their metal sleeves look nearly identical to me. Will the metal sleeves fit in the plastic holders? Is everything the same dimensions? I feel like everyone may be overlooking a very simple solution.
The old brushes have a wire on them, but the wire appears to be a tiny pigtail, with a female spade connector on each end. All other things being equal, the only difference would be the manner of electrical connection. Apparently, the spade connector on the brush sleeve is somewhat of an anomaly. Perhaps a different supplier, oddball in-between revisions thing, or aftermarket. Looking at the terrible photograph on the seller's website, the lower brush in the picture looks to have two tiny holes on the bottom left hand side of the picture. Those look like holes for a small gauge wire to be fed through and soldered on. That's what it looks like to my eye, anyway. Mind you the picture is awful.
So if these brush & sleeve assemblies fit the bill every other which way, solder some wire in there and boom, you're done.