“The engine is a high compression 12:1 TRW piston and will assume its roughly 12:1 not assuming anything about the deck or gasket height etc.”
I know only that the pistons are TRW and say 12:1 right on them and they are not cut. I know this because I saw them by bore scope.
I did not assume anything else and thats all I am able to go by. If its actually 11:1 thats great news it makes my life that much easier! I hope Tim is correct!