Cool
I think we'll just have to run this one and see what happens
I haven't got the block and pistons handy to take any pictures, but they're the same as the TR6 engine in the link you posted earlier
Restoration of a 1970 Triumph TR6 by Edwin Treffers/Rebuilding the engine/TR6 - engine ready for head
The pistons are flat, and level with the block
I've been told by various people to take 0.010" off the block deck
The head gasket is apparently 0.035" compressed