The OEM wiper frames that hold the blades were those late '60s Jaguar ones with small dia. ss wires, and there are innummerable splined arms that fit the stock posts. I use blades that are about 1" longer than stock to wipe a tiny bit more of the glass.
What year is the car? (can't tell from the photos) Note that there are two different wiper assemblies that use similar parts but park the wipers on opposite sides of the windshield. '71-'72-1/2 parked on the left while all others (I think) park on the right. The assemblies interchange but not the wiper motors for the two types.
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