Other than nearly snapping that **** low oil pressure sensor again, the frame and engine went back together easily. Mrs Hunt was valuable on the engine crane, helping to lower the frame, but really I could have done the whole lot myself. Most importantly, when I flick the shifter she changes gear!
Took 2 goes to get the tranny 100% - an e-clip that retains the shifting fork rod wasn't seated properly....test test and retest before I finally sealed it all up.
The alternator cover is ummmm errr quite exciting to refit....turns out magnets are stronger than I am....