The Mac 4 into 2 mufflers may be period correct but they are damn sure not plug and play with the stock headers. A lot of slicing and dicing with the wheel of death but they are on. You can also keep the stock side and center stand but I am going to have attach some buffering rubber on the contact points. Going to look at the carbs one more time, then final bolt up. I have no idea when I can test ride it, cold as a Witch's sweater muffin here in Virginia currently.....