LT 75 -- Not sure on the # 6. If you have never gone to
www.misschicken.com, then please do, and check out not only asphalt cars, but also recent updates.
Most of Jerry Simpson's cars were LMs, number 11. He painted the numbers himself, with just 2 straight lines. For a good while there, they had the hobby cars' numbers in circles. I do not remember that particular 6 car, but Tobby's recent updates do show that car. The hobby cars all ran sixes.
Joey Myers drove a number of 6 hobby cars, but I do not think that was one of his. Hope this helps.