Mystery pieces where do they go

[formula46two]

I am in the process of assembling the 78 TA and ran across these pieces and not sure where they go. I think possibly around the corner support?
Here are two more pieces that I can't place, any ideas?

[sreta]

Radiator core support, lower corners

[formula46two]

Radiator core support, lower corners

Thanks I thought they went there somewhere

[Wallington]

Nice clean pieces too. The longer one is usually worse condition and rusted out under the battery.

[wheels78ta]

Couple of pics on location

[formula46two]

Thank you very helpful.

[Wallington]

For anyone else doing this, the 76 versions are the same but without the access holes for the core support mounts.

[roadking77]

I was gonna ad what Walli said. Most of the ones I have seen have been rusted to almost nothing. Those look like gold to me!