Honistly , I don't know what direction I'm gonna go yet with my project, its just to soon to tell, My build is based on a 78 650 , but the motor is a 81, the 81 was a whole bike, pretty much its a rolling frame w/o title now. the 78 has a clean title, runs, but has a rod knock. I might split the harness into a 2 part harness ?, I might just use the harness that came with the 81, I might convert the 81 to points ?,,, when I figure it out I will post what I have going on. 1 thing I have discovered is those motors seem to weigh more than they did 30 yrs ago ! , I bought my first 650 for 150. bucks , I was in my early 20's, I'll be 50 in less than a month, I also have a sx 750, and a sx 1100 , but nothing brings back the memorys like mounting that 650 !!!, I like the power of the other 2 bikes , but I really like the way the 650 fits , maybe next year I will try to make a 750 feel like a 650, ! ,, and bolt up a 1100 motor just for the extra horse's ,,, I just don't know. What I do know is I'm glad I have this forum to go to for help !!! , Last time I did a motor swap I was nerves , not so this time around !!!, Thanks , Bruce