help my slant 6

my wife drives a 66 valiant with,a/6.basic mods include a super 6 intake/carb,a mild schnider cam, 256 dur.435 lift.a mallory dual point,and a single 2 1/4 exhaust with a walker turbo muffler.its by no means a 340 car,but it makes good torque,gets decent milage,and has a throaty sound.i dont recomend cherry bombs.for us the dual point works well ,but you would probably be better off with a more modern dist.