yes if the bike is running good allready then all you need is 78-79 cams .....and you might have to do a lot of work to get to the ignition and make it adjustable ...i did im not real sure this is maditory or if what i did was exactly right on the timing im still testing and not a lot of miles yet....but it seems to be realy nice so far ...the 83 didnt run well before so i dont have a good idea as to how much different it is .....but in low rpm running,take offs and such its nice and smooth :mrgreen: