Gold Lifetime Member
Join Date: Oct 2001
Location: Londonderry, NH
Nothing short of all out competition "requires" an aftermarket ignition, I've run plenty of 11 and 12 second 1/4s with point ignitions.
There are a lot of benefeits to the aftermarket stuff though: the higher spark voltage and energy will reduce misfires and improve the burn, No degradation of spark or drift in ignition timing as the points wear, you don't have to change the points ever again, you can open up your spark plug gaps to unshroud the spark a bit which also improves the burn, you may notice a touch better idle quality and even a slight increase in mileage, etc......
You could use a stock or aftermarket HEI ignition in your application and reap all the bennies w/o laying out major dough for an MSD, Crane, Jacobs, Mallory...... ignition.