Information about old NHRA records will probably be easier to find although you'll need to do some digging. As far as I know, there are no repositories of past Stock and Super Stock records for any of the racing organizations in spite of the fact that NHRA has an Official Museum. NHRA is clearly in the business of making money exploiting the Fuel Cars these days and they could care less about the "good old days" and door-slammers. Your answers are most likely to be found through someone who has the stash of information (and there are people out there who have it) on Stock and Super Stock cars as far back as the late '50s. The search will be less complicated if you can provide some basic information such as the name of the owner/driver of the car at the time it was raced, pictures of the car when it was raced, the general area of the country where the car was campaigned, the engine/class combination it ran, etc. If you have all that or some of that you might be able to jog the memory of the right people. Most of the Stock/Super Stock geezers like me monitor a message board at www.Classracer.com
. A few polite inquiries posted on that message board might bring forth more information than you can imagine or then again, maybe not. NHRA historical information is available to a significantly greater degree than that of AHRA but almost all of it, especially that pertaining to stock-bodied cars will be in the hands of racers and fans, not the Association.