I guess blueprint can mean different things to different people. To me, it's where key specifications are double-checked to usually closer than factory tolerances to produce a true blue printed block (i.e. properly located bores, deck heights, alignments etc.). Also, blue printed components invlove balancing the reciprocating parts and rotating assemblies. One goal is to build the engine to make desired power from a given design. All of this and more is done by Smeding Performance.