Interested to hear other peoples views as to who was the fastest racer to pilot a GT 40 in period. My vote would go to Dan Gurney. In F1 he was the guy most feared by Jim Clark and often was the fastest man out there. This despite the fact (in the 1.5 litre days) that his size effectively handed him a 10bhp deficit over the (typically) small guys competing (this is approx 5% of total power so significant if your counting tenths in lap times). More reliable machinery would have seen him much higher up the all time greats in F1 IMO. I believe that when you analyse what he drove, the relative competition he was up against and the (relatively) unreliable nature of the racing cars of the time then in in terms of raw speed he was the best US driver of all time. No axe to grind as I am from the east side of the pond.