Technical Mr. Roadster brackets ID

I got these with a bunch of other parts. Not sure what they're for. Help?

 

The holes should have a 7* taper for early Ford tie rod ends. You bolt them to your frame so you can connect a split wishbone or hairpin radius rods.

 

Cool. Any idea when they were made? I can't find them on Google.

 

They appear to be cast aluminum.

 

I think Jay Ohrberg started Mr. Roadster in the early ‘70’s. He sold the name and the rights to his products to Speedway Motors but I have no idea when that happened. Being aluminum and bolt on I kinda doubt they were real popular. Functionally they would work but to me they’re clunky looking.
Sorry, JMO.

 

They are aluminum. So I would guess they're probably early pieces. Thanks.

 

I was a dealer for Mr. Roadster back in the 70's, here is the listing from my only remaining catalog.

 

I would NOT polish those for 5 bucks !!