Many years ago Mallory replaced their very effective (and difficult to tune) dual point setup with something called a "Unilite" system. It used an optical trigger (infra-red, I believe) instead of points, and some sort of adjustable centrifugal advance. No vacuum. I don't recall it being very popular with the round track crowd, and I've never been one to waste much time on drag racing. At the time, I was modifying "stock-appearing" HEI units for small block Chevy V8s to let me turn my engines 1K RPM or more faster than my competition, and hiding the mods from the tech inspectors in the "street stock" class at the local round track. Once my driver made it to the front of the pack, the only thing the race was going to decide was who was going to run second!
Jerry
