Hello everyone. This is my first post outside the new member file so maybe this has been posted before but i was unable to locate it in the search feature. If a thread already exists, please direct me to it or input something that might help. My question is about the mid 60's era NHRA Class structures for non rail dragster vehicles. What were the main classes used during this time and what were the restrictions on car building? For example, what was the differences between the Gasser classes, and the Stock classes? I was reading a little bit on this page about the 1964-1969 rules, but this artcile doesn't seem to explain the S/S, A/FX and other classes of the time. http://gassermadness.com/ Everything on there was listed as a "Gasser" category. For starters, i know cars like the 1964 Ford Thunderbolt ran in the Super/Stock division while cars in 1965 like the Dodge were altered. What were the other designations for the Stock classes such as factory experimental and others? I assume this picture was taken in 1965 because of the altered wheelbase Dodge. Sorry if i made that unclear.