OK some pics of the S90.
This is how it looked after a little while wrenching on it stripping it down.
As you can see (or maybe cant) the new engine is NOT a direct bolt-in but then I didnt really expect it to be.(would have been nice though)
I dont want to cut/grind the S90 frame so I'll try to make an engine mounting adapter bracket.Once thats done and a few other mods I'll strip, sand and paint the frame.