IMO the elcheapo Autolite Lifetimewarranty ones from advance works as good as the rest. I went from msd's 8.5's to the autolites with no difference noticed to me. Good thing is the replace them free no questions asked. I get a new set every year
quite a few years ago at our buick meet in bowling green I purchased a coil pack ,module and adapter (from a vendor that I cant remember) that came out of newer 6 cylinder gm cars.I have had this set up since with no issues what so ever .The 1 trillion dollar question is - is it better and my answer is -no- it is the same as the factory coil pack exept the spark plug wires plug in to the front of the coil pack towards the front of the engine instead on both sides like on the factory unit..there you go ..