i still stand by my "possible in two days" opinion.... with all the parts, and a half decent set of tools....

Mounts will line up, so that isn't an issue.... electrical knowledge is also required along with a multimeter. A welder and an angle grinder with different types of discs will also make those unseen issues go away real quick. Anyone with a decent shed and some diy skills will most likely have these tools.

Done plenty of carby to efi conversions, albeit on non honda's... and i have to say, it isn't difficult at all.

start on a friday arvo and it can all be done by sunday night. Will take an hour or so to remove old engine, and not much more to put new one in.. all on the friday night. Saturday can be used to sort out the fuel and electricals... seriously, list out all the tasks and parts, and it's a walk in the park.

Some of you guys should really get your hands dirty.... i'll leave it at that.