Here is a video of Pat Heneberry's original C/SM 68 Camaro which he took out of mothballs since it was last raced in 1981 (or around that time) Today, still with the paint job and decals from that era, ladder bars, Dana 60 and a basically stock 350 (with the Super Mod of that time headers, intake Holley Carb) but updated with a Jerico he races it in NETO http://www.neto-nostalgia.com/ competition and having fun!
He bought this camaro new as a SS with a 396/375 3 speed manual. in 1968, Wanted to race SS/CA with it, hoping for a mid year Automatic tranny option from chevrolet which never happened. He then decided to put his inline six cylinder from his old 57 H Modified Production car, and raced it as a H/MP for a time, then converting it to a C/SM when that class was developed. he told me you could have 40 plus C/SM show up to win class at ant event! Now thats classracing!