update time,
pulled the rear drums, nothing inside, no hand brake brackets / forks, no springs,
in a stroke of luck a chap messaged me as he had a 620 he was breaking for parts, it was definitely beyond returning to the road but i managed to salvage most of the break bits i needed for the rears.
the only bit i was missing / couldnt get was the centre spring in the photo above, which is the top spring for the rear brake shoes, the silver one on the right is for an isuzu trooper/rodeo, which is a bit short but just about fits.
Engine came back eventually, painted it up,found a little brass plaque on it i hadnt noticed before saying remanufactured
rebuilt the block, was quite fun, everything went pretty smoothly, threw it in:
throwing everything back together, still a few bits to do before firing it up