Thanks for everyone's feedback.
UPDATE :
Finally get engine and gearbox reinstalled .It fought me every inch of the way !!
Drilled and tapped and plugged the 'steam holes in the block.
Copper coated the 'Best' head gasket and torqued head down to 55.
Started motor and ran for about a minute then cooled over night , twice.Got a little movement the first re-torque then none the second time.
Checked oil ,all good .
Filled radiator with water and ran engine again for 10 min and oil was white with water again ,some froth and spittle come out of filler tube.
Let motor run at fast idol till operating temp was reached then added block seal to radiator.
After about 15min I thought there was improvement so let engine run for 1/2 hour and oil was looking much better . After about 2 hours oil was like new.
Switched off engine and noted water level in radiator and called it a night.
Next day water level in radiator was same.So block sealer saved the day.Went for short drive and noted much improved power, acceleration.
Had some very dark thoughts through this process and used a lot words I wont repeat

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Thanks for everyone's input it means a lot.