Ray~ the "igniters" are just autolite spark plugs. and you don't need to weld the bungs in... they supply you with a nut that will thread onto the spark plug, all you have to do is drill a 9/16" hole in your exhaust tip and bolt the spark plug down from the inside of the tips... the trick is, they suggest you mount the plugs 18-24" away from the exhaust outlet... if you can find a way to tighten a nut 2 feet into a pipe, yea. so I have mine 8" away from the exhaust outlet... but I am currently building some custom exhaust tips that have triple 3" outlets on each muffler.. kinda like combining my current side pipes with lakepipes...