1970 Trans Am vintage SCCA race car

[Baron Von Zeppelin]

Where or how is the best method to do research on such a vehicle and in general what type of venue is best suited to sell such a vehicle?

You might find some more people who might remember the car from back in the day on the Pontiac Performance Years website.
https://forums.maxperformanceinc.com/forums

I remember the 1992 article. Thats about it.
70 TA is my favorite car and its cool that this one was campaigned.
There are some SCCA type folks on the PY Forum
70-73 TA/Bird section is the best bet for starters.
Good Luck to you

Pontiac gave one of the SCCA Officials a new 1972 TA - special painted Red.
It was never raced, and rarely even driven.
Still exists in excellent condition