The Riley Protofab PR2 Supervee racer was designed and engineered by Bob Riley and built by GT1 LeMans winner Gary Pratt, Charlie Selix, Bob Riley, and many other contributing members of Protofab Racing. Pratt is also the founder of Pratt Miller Engineering. The Protofab is hailed as one of the first open-wheeled racers to use ground effects in the United States.
1979 Riley Protofab PR2 Supervee
The Protofab had many years of racing in SuperVee competition. It was piloted by many drivers before its retirement in 1984.
It was later bought Boles who had the car restored and outfitted it with a racing engine. The car was then put into service as a racer for the next ten years, competing in historic sports car racing.
I don't know much about them, but I think that David Boles' Profab Riley Super-Vee was mentioned in a Grassroots Motorsports magazine article in the past year. I swapped email messages with David a few times. Nice guy. He's got a '79 Profab Riley PR2. Built and driven by Gary Pratt of Pratt Miller Engineering. David's email address is firstname.lastname@example.org (I hope he wont mind me posting it here).