Cheers for the offer and advice fellas. Unfortunately I think there's more bits and pieces sitting in the crate I cracked the block over than went back in. To be honest I don't know if it could be ressurected with all the little shagged out cogs and bits I think I saw glooping around in the bottom of the crate. I had to shear off a couple of the block bolts to split it two as well.
However the old dear is still doing service clocking up more milage than ever as a roof ornament ontop of the ute as advertising. It's hardly the original paintwork but I re-sprayed the base black and the engine chrome to stand out proud. Does well in getting attention and jobs though! I'll post a couple of pics when I remember to take them.