I ran A in 75 with a 67 Mustang with 351 Cleveland. NHRA decided that was not legal with the 351 Cleveland block not being stock configuration.
In 76 I started running C with a 67 Camaro - I was moderately competitive (usually wend 3-4 rounds at the Summernationals and did on at Atco & Englishtown weekly Modified eliminator.
Getting back to the OP question what killed the deal for me was when Jimmy Miller (from somewhere around West Chester PA) bought Garley Daniels Silver 67 Chevy II. That car was at least .2 faster than my car. Garley came up once a year to E-town and that was fine but with that car here every week took the wind out of my sails. I did order a set of the state of the art heads with *** valves etc fo the next year but wisely canceled them in favor of raising a family.
