Need help to ID

[v2]

Hi everyone. I was hoping to get some help identifying these parts I have…. It may be from B24 or B17 but I'm not sure...

 

[MiTasol]

have a look for some part numbers or inspection stamps (usually sort of circular with letters and/or numbers tho Douglas used a D with long top and bottom and numbers inside)
I would look first in that tee shaped part. It rings some bells but I cant think which ones at present.