perfectly mate i'd say, water leak has fixed itself, not leaking oil, starts and runs without a single hitch, it's louder and crisper than the old motor with plenty more power (and thats without opening it up yet either), overall i'm very pleased.
only problem is gearbox is now leaking from input shaft, hopefully not too much, it did it last time we took box out but healed itself soon after, hopefully this will self fix also but i dont think it will.
will just have to keep it topped up
thanks jim, will have to see you soon pal