what was wrong w/the block surface?
Douglas only has 4 bolts per cylinder.
So Far I think the engine has seen as high as 27 PSI?
I would not say that the deck surface is bad. Seven head bolts made it alot more stable. The cylinders go out of round easier without the extra bolts. Well, they did on a nitrous motor
Now we have the turbo it may not even be a concern. Only time will tell.