Greetings,
Something of likely interest, follow the link to examine a multi-part biography complete w/period photos outlining the life and influence of one Bill Howell. Yunick, Penske Racing as well as Chaparral Camaro effort technical insights are to be gleaned, while the photos seem unique too. Do consider exploring...
https://howellefi.com/bill-howell-history-part-1/P.S. If trouble is encountered accessing other parts of the tale, try to click on the posting date near the top of the body of the installment before scanning down to possibly reveal recycled additional link options such as 'Part 2' or 'Part 3'. Apparently the reportage stretches across at least seven parts. Good luck!
Mike K./Swede70