Honda-SOHC

Thanks for the welcome already had some sound advice from Bryanj
I want my rebuild to be a quick get me going then see what i want to do with my spare frame and engine.Could do with a good engine builder tuner to eek out as many horses as poss.

Thanks guys am sure after reading lots of info (had to buy some reading glasses there so much) that the answer will be out there.
Have posted some pics of my bikes and will do a better one of the cb when i can move it out of garage
Anyone know if brake master cylinder is same for twin discs as single and how to tell,my master is seized in and want to replace the lot,heard about a gold wing one on here

Hello to you all, I have always wanted a 400 four since i had a go on one in 1978 but was into 2strokes and never got round to getting one,so last month i got one on a whim.
Probably not my best idea as i got a non runner and far from standard.I am in at the deep end as i usually play with 2strokes and modern bikes.
i have a lot of issues with my 400 as its an italian import with no documents.i have been reading in depth all sorts of info but still not sure which way to go with it.
I have contacted silvers and the bike is a early 75 but engine and frame no don't match.Can i contact anyone to sort out a registration or is it to much of a chore?.
I have a uk frame and matching engine and v5 which i was going to change everything onto but engine is seized from being stood this also is a 75/76.
Anyone local to me who may be able to  help please?