I doubt that it is a Glidden car, since it appears to be a stock type front suspensinon and I also think that all the Glidden car are accounted for. . Pro Stock was so screwed up in the early days that it's hard to remember what all took place. It used to be based on weight to cubic inch and wheelbase was also a factor. In 1972 the rules were changed and tube chassis was allowed, but the wheelbase had to remain stock. Jenkins took full advantage of the rules and built the small block, short wheelbase, tube chassis Vega.The rest is history. There was a rule for just about every combination known to man. Long wheelbase cars would get different weight breaks for different engine combos, as did the short cars. A long wheelbase, small engine car got a pretty good break and was the reason for the Gapp and Roush Maverick and Wally Booth going to a bigger car. There were probably more Pintos built for Pro Stock than any other car. On the other hand, the Hemi Colts were something to watch, especially when they turned over backwards. Wheelbases ranged from 92" to around 108" . I don't remamber off hand what year they allowed stretching the wheelbase, but I think it was around 1982. Then came the 500 inch motors, standard weight and parity.Todays Pro Stock cars are probably the most technically challenging cars in drag racing, but Lordy, Lordy, the old days sure were fun. Ben Jones is a friend of mine and only lives a few miles up the road. The body is long gone, but the chassis for his Pinto Pro Stocker is still at his shop and he still has a Bob Glidden built, furnace brazed, 427 Cleveland that used to ride in it. Ben still holds the record for the fastest, normally aspirated Pinto. All of this is just from memory and I'm getting old, so it may not be spot on. I have lived through the greatest years of drag racing and factory hot rods and I wouldn't trade the experiences and memories I have for anything in the world. Just an old guys ramblings.