Rear Frame Extensions

[TRDxB2]

Hadn't seen these rear extensions before. Not like ones for a spare tire and I haven't been under enough T bodies

[Norman Kling]

It's possible they were made for mounting a trunk on the rear.
Norm

[Dan McEachern]

They look like the remains of a factory spare tire carrier.

[TRDxB2]

They look like the remains of a factory spare tire carrier.

That's what I was thinking but the center photo looked different no rivets/holes on the cross member end. The far left photo looks very similar except for the holes on the top of the extender. Can't compare the length but looks almost equal to be cut

[kmatt2]

Those brackets look like they are from a early 360 deg spair tire bracket. This is odd because I see that your frame has the later type ,1921, running board bracket and the 360 spair bracket was used in 1919 into 1920.

[Pep C Strebeck]

They look like the remains of a factory spare tire carrier.

That's what I was thinking but the center photo looked different no rivets/holes on the cross member end. The far left photo looks very similar except for the holes on the top of the extender. Can't compare the length but looks almost equal to be cut

A little off the original topic, the spare tire carrier in the upper left corner of the collage you posted was mine. It is one of the first photos that come up when you google Ford Model T spare tire carrier. It had been knocking around in the garage for at least 15-20 years and I got tired of tripping over it, I tried to sell that thing for at least 5 or 6 years, nothing wrong with it, no cracks or damage or repairs, and I thought the price was fair ($10). I couldn't give it away, I took it to a couple of local swap meets and it was marked F.W.P., free with any purchase, no one wanted it. Someone bought a frame from me and before they left the house, that got put in their trailer without them knowing.