Where does this go?

Took it off my 64 S1. Can’t find it in my pictures, or any parts manuals.

Thoughts?

P.S. Has heat shielding on one side…

Looks like an S1 veriosn of the lower gearbox heat shield.

This is what it looks like on an S2:

Heat shield above mufflers. J30 parts book, page 190, bd-20436, plate 39, pc-20…

It’s a heat shield. Goes above the downpipes, just ahead of the transmission mount.

Thanks Guys. no wonder
I could not see it.

I found this to be one of the better pictures…

oh my, mine will never be that clean.

Flap over the front bell housing hole is missing.

Other than that, a lot like mine (pictured above).