personally I would use the points at least for initial start up. Many people have had good luck with pertronix, I as well as several others not such good luck. I have had 2 of them fail on me. They said one of them worked on their machine, but in my truck I had to ride the bus. If you do go with pertronix, make certain you keep the points and all the little wrenches and stuff to re-install them in your glove box (refer to the bus mentioned above) OH, and as far as I can tell the pertronix made little or no difference in how it runs, it may even run better with points, all I know is I can fiddle with points until I die, and not go through as much grief as I did with my UPGRADED ignition on that one rainy, windy day along side the road. (this is also the only time the truck has failed to get me home in 29 years.) So I am not a big fan of pertronix. Although they did send me another unit to replace the one that quit, and it seems curious that what they sent me is completely different than the one I returned. Just curious as to why they felt it necessary to change their design? I am just afraid to put it in when it runs so good...