Need an HPI TA-01 chassis part

Hey there folks, I am on the lookout for Amigamad and can't contact him. If you happen to have an HPI TA-01 chassis like he does, please let me know if you can get me a tracing or dimensions or drawing of the mechanism deck for the TA01 FRP HOP UP they made about 20 years ago. I have been fortunate enough to get the other two pieces and some standoffs, but need that final piece to make this happen. Have a look at his photo, I have circled the part in GREEN that I am after.
Thanks,

Chris