Hello to all, got a 1978 CB750K8 for real good price, thing is very rough and motor is locked up but actually believe it to be the transmission so have to get into it. One thing that I am interested in is the Gordon Frame kit as I don't have anyone around to help pull motor. Bike is in my house and I am stripping it down and getting rid of the rusted parts. Not in a hurry to finish it and have built bikes before, although first Honda in 40 years. Another question is that if I decide to put a new used motor in it, what years will fit, what won't. Thanks for having me