'99 750 Nighthawk engine in '79 CB750

[pdubya]

Hey,

So I'm new here because I've been trying to research a question I had and haven't found an answer yet:

I bought a 79 cb750k that I plan to strip down and sort of give it a cafe/brat look and feel. The engine it had only runs on two cylinders right now and before I rebuild the carbs and check ignition and everything else that could be an issue, I want to find out if I could put a newer model's engine into my frame. I have a buddy with a wrecked 99 750 nighthawk that runs that he'll sell me cheap and I'm trying to find out if I could use the engine?

Has anybody done anything like this? I'm sure I'll have to stiffen the frame due to the extra power, but I don't really want to mess around too much with redoing the mounts because tbh I'll probably make them crooked.

Any help would be greatly appreciated!

[Re-run]

Well, given enough time and money, you could probably do it, but I seriously doubt it is a bolt in job.

What damage does the 99 have? Sometimes bikes will be totaled for insurance purposes but need little work to get in order.