This is my 1975 Honda cb750 K-5 although it also has parts from a Super Sport and a Honda 500.
I did a minor rebuild on the engine and painted it myself. You can't tell from the pictures but the paint is not that great. But for a first time it is a great way to learn.
Now I just have to adjust the carbs and set the timing and Va-Rooooom. I'll be speeding to an unemployment office near you.