i bought my motor from a junkyard and it has no VIN tag. and no one hand me BS about "well the junkyard stole it" cause it is a very legit place (and huge) even came with a 6 month warrenty and they knew exactally what car it came out of (had em labled by lot #'s.)
just go down and offer the guy a few bucks for some and see what he does, if not ask him if he's willing to part em.
i'll take a complete b16a head if you do that