Yeah, if you want originality, then try and source an engine that's correct for the period of bike you're trying to build.

Those crank cases and internals can be used, but you'll need to swap out a few parts and the engine numbers won't match the year for your build. Doesn't bother me with that sort of thing but your mileage may vary.

My servo do t seem to be getting any power it's not doing a cycle all the wires look good connections has me stopped myn is a 4 wore plug witha separate yellow wire it has me stupped

@StanKn

Mine was like it when I first sussed out it was removable. It was caked in what looked like cement dust!
I’m glad you got it running sweet again 😜

First gear, back brake on. I use a half inch socket with a slide bar, apply pressure to take up the ‘slack’ then a sharp tap with a rubber mallet usually does it…

Thanks for all the info sounds absolutely perfect for me, I'll definitely buy!