its not a peice of cake but not difficult either .....the big deal will be the gearing change ....the 78 motor will make it a lot taller close to the 83 1100 gearing ...its first gear is tall but plenty useful and works great ....i know all this as my 79 1000 was fitted with the final drive from a 1100 ....it will be about 3600 rpm at 70mph i loved it on my bike ....putting the 1100 carbs on the 78 motor is a good ideal too there simply better than the 78 1000 carbs period......good luck :mrgreen: