Well, finally i have the engine back, with a re-bore to .5mm over size as the bores where slightly worn. Its all painted up and I have put a new set of pistons and main bearings into the engine and i can now start to bolt all the bits back onto it and get the bottom end into the car and fit a few other parts while i refurbish the head.

Opel Manta A series engine rebuild

Opel Manta A series engine rebuild