I've said this before and I'll say it again. When you put a 'working' hei style dizzy and coil into a car that was on points, the result is so good, you'll wish it was the first thing you did when you bought the car. I say this because everyone I've helped put hei on their car (old holdens, various valiants, even slants, using a hemi dizzy and bosch module) has said those exact words, almost identically each and every time.

They just kick butt for cold starts and throttle response, fuel efficiency, you name it. They might not make a lot more peak power (unless the rpms are higher to the point the points don't like it) than perfectly adjusted points, but the mid range, the gains across the range, it all adds up.

Cars that used to foul plugs due to hot cams (where racers would previously start the car and warm it up with one set of plugs, then switch in the 'main' set of plugs for the race) are a thing of the past.

Find out what is wrong with it and fix it. About the only argument I could make 'against' it is the cost - if a couple of hundred bucks (for which you could have a new electronic dizzy outright) is too tough on the budget (and I am no millionaire myself either) then ok, stick with points But if the budget will stretch that far, you'll never look back.