Thanks Peter- way to go yet but Im still grinning ear to ear :-)
Im pretty sure mine did indeed come out of a lifeboat and is low hours. Certainly when I took the gearbox off the splines, drive plate and internal bellhousing were immaculate with no wear visible (relief) Similary the flywheel ring gear has little wear.
The diesel filter has a really tall collection of fittings for the return pipe.I thought it had been bodged. Turns out the reason for this is that the lifeboat engines were actually fitted with it and is a one way valve so the lifeboat could be turned over 360 degrees with no fuel running back into the engine! Amazing stuff but I dont intend to try this theory out :-D
I will put up a video / pics of engine sometime soon - if you see the chaos the engine is sitting in at the moment you would realise why I havent yet..:-D