So I have a basically stock 78 lil red express with few internal engine mods and a quick fuel carb , all factory wiring and Ignition system, only thing changed is the coil, it running like **** , all over the place , seems like an Ignition system issue to me , I have a full msd setup on my challenger, works perfect love it , but do I spend 800+ to buy that for the truck , or do I just start replacing the factory stuff that has probably seen better days , or go to a ready to run system, I see msd has them still pricey, seen some cheap crappie on ebay for like $60 , sounds way to cheap , or are guys doing the hei thing ? what are you guys doing when the factory stuff gets worn out ? Im figuring if I stick to factory, either the distributor or the ecu box are probably were to start what is the most common Ignition system part failure with older age?