Norman Warling has posted some good info on what engines guys are running. He runs a '62 Cat Stocker, and has helped work on his brother's SS cars, one of which held a nat record for a while. He's also neighbors with Scott Burton. Scott & his son race 2 Stockers & one GT car. Those Stockers are 2 of the quickest Pontiac Stockers running today. Both have won lots of big races. Brad has been national Stock champ.
https://www.dragracecentral.com/DRCStory.asp?ID=219127
I would again like to thank Norman for all the info he has posted about the class racers !