what do you mean by blueprinting? if you mean a full blueprint, youre pretty much wasting your money. all the engine builders i've talked to have said a full out balance and blueprint is a waste of dough unless you are pushing insane numbers. if youre going to go that far down, just bore the block and balance/polish your crankshaft. bunner engine development in hampton will do it. they build insane motors. call 411 and get their number. are you thinking about doing this to your probe?