Steve,
It is a 10 day event with the weekend of July 13-14th being at PittRace just outside of Pittsburgh. That's where the big bore cars run (i.e. Shelbys). The main event at Schenley Park with the 3,000 cars however and the vintage racing on city streets is on July 20-21, 2019. The Chairman of the Board for the PVGP is a Ford dealer and has strong ties with Dearborn and the Ford family, so it should be good. Henry III's new Ford GT was there this year at Schenley Park in the Ford display.
Jason