Cool topic and hijack.
To the OP I don't have any input or answer to your question.

re. Blueprinting an engine.
It is MHO that blueprinting an engine is to coat one side of all mateing surfaces (head, block, bearing caps etc.,) w/a blue machinists dye (I don't recall the official name at this time) torque the mateing pieces, remove the pieces and check for any uneven and/or problems with perfect fitting. The lack of blue on the piece that wasn't coated indicates a problem with the surface at that point.
Ofcourse I could be wrong grin
Dave