Thx David, John & Erol; my wife is constantly after me to get another hobby, and reminds me that men my age are usually out chasing little white balls in their spare time, not hotrodding. She probably thinks I ought to be more "dignified" at my age, and drive a Mercedes, instead of a hotrod Supra.
I just can't imagine that chasing little white balls would be nearly as much fun or as satisfying as building a new ignition system for a motor, and it actually works, or running in that new motor on a dynamometer, or experiencing the acceleration of a 600+ HP car. But then horses for courses, right?
Maybe this is the bit about getting younger, eh Erol?