John went rear-engined in '74 and his slingshot was sold to and run that year by Dave Dekker who called it the 'Green Draggin'... where it went from there I'm not sure but I have a vague memory of a post on the NSRA forum about five years ago from someone who claimed he had it and was looking for history???
I don't think the slingshot ever ran an eight but John did get the RED in the eights.. I'm guessing he felt the slingshot had reached the end of it's development in '73 and decided to go the RED route to further shave the ETs...
His first slingshot was BMC powered and called 'Obsession' in 1968...
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