All of your grandparents drove these cars with the factory system, for hundreds of thousands of miles....My daily driver truck has the SAME ignition box AND BALLAST RESISTOR it was built with in 76, like 300,00 plus miles, so do what you want, plus, if for some reason it does fail, EVERY parts store in the usa has parts on the shelf to fix it in 10 minutes..I also run a automotive shop, and I can tell ya, them GM modules fail all the time