I am still learning about the bigger Briggs engines models 9,14,19 and 23. I know of at least 3 types of ignition systems used on these models. You have the magnamatic system with the points on the side of the block and the coil under the flywheel like my model 23A . My model 23C has the points under the flywheel with a coil above the flywheel. My model 19D has the points on the side of the block that are different than the model 23A points and a coil above the flywheel. I have yet removed the blower housing on some of my engines, so i still may have even a different type yet to be discovered. I know about the late K.D.Redd's coil update / conversion. Has any body else come up with a coil update for the Big Briggs ? I have ran several of mine with a automotive coil and a battery when the coil has failed. Part of my plan is to find a modern set of points to adapt to the Big Briggs to lower the cost of getting them running and not buying expensive original points. I have found some original sets selling on the average as high as $40.00 and some even higher.That is just way to high. I have many sets of new points from U.S. built cars and trucks and plan to go thru them to find something i can adapt. I have no desire to go to a electronic system. I like simple. Besides replacement points will be hidden. I understand some people only like everything original and that is fine. I may wind up running a modern coil with a battery and a charging system. I want to build something along the like of a big Tote Gote and where i go i need something that is easy to fix.