I think it's the Derossi Special, driven by Doug Elcomb in Canadian historic events.
I can't find any more info about this car apart from it was built from an F86 drop tank but Allan L already worked that one out.
Neilshouse gets the point. From a site that I can't access any more[maybe it's defunct...] I was able to gather a few tidbits about this interesting little car. Ray Dreossi built it in 1961 under Canada Class rules. It was indeed fashioned from the drop tank of a Sabrejet, and is powered by an Austin-Healey Sprite engine, bored out to 998cc. I don't know just how successful it was when it was built or who drove it, but with Elcomb behind the wheel, it is a holy terror on the track, setting lap records and almost always finishing near the front in vintage races, both in Canada and in the States, as well.
The car first came to my attention after seeing it in an article in the February, 2008 issue of Vintage Racecar Magazine, entitled VSCDA Fall Finale. I don't know just how Doug Elcomb became involved with the car, or what other cars he's driven, but apparently, he's a very astute driver.
I believe Ray Dreossi built about 10 cars over a span of several years, but don't know if they were all Canada Class -spec or not.
I really just posted this puzzle in the hope that somebody might have more info on the car and the man behind it. It doesn't appear to be much larger than a go-kart, and has an engine of nearly 1 litre capacity that I'm sure could be tuned to develop at least 75 hp or so; and I seriously doubt that it could weigh much more than 1000 pounds with driver, so it must be very quick.
And I thought the only place for a drop tank was on a dry lake bed...
Well done, guys!
Dan