The picture looks light because its dark, honest I know what I mean, the top of the pistons are a lot darker than in the picture. I'll adjust the image later.
The engine does have a number stamped at the back, I might get a copy to see what it is, it did not use any oil before I had the head off just the water issue, which I hope this cures or I'm at a loss TBH.
I will be sucking any oil or water out of the bolt holes so I don't crack the block when I put it back together. Although this is my second car I'm missing it a lot as the other one is not practical for the dogs.
I'll do the wiring I needed to do today and also get the heater element out. I'll order all the parts to refit it tomorrow from Paddocks.