Apparently a long term illness was involved. I remember Stirling back in the late 50's - early 60's where he raced at several East coast venues amongst others. Anyone remember Mossport, Put-in-bay, Watkins Glen? Course record (old road course) at W.G. still belongs to Mannie Holder driving a Porsche 550. Knew the Holder brothers well & my dad worked the pits / mechanical work on their cars. Still remember their 550 coming off a plane from Flying Tiger airlines. First time I saw a cargo plane open it's belly with ramps to roll a car down. Road racing took a toll on that Porsche. Bet they would have put it in a time capsule knowing what it would eventually be worth. RIP Stirling, you are a legend.