Probably Chuck Arnold in the Peterson rear engine car at Indianapolis in 1964. I've never known much about the car although from photos it always looked to have been pretty well designed. Of course, it didn't help that stock block engines had the same displacement as the DOHC race engines in 1964. I believe Pat Flaherty drove this car in a couple of races in 1963; probably the last car he ever raced before he switched to racing pigeons.