ok i bought a 71 chevelle about 8 months ago, with a 245HP turbo fire 350 suffix code CGC, well a guy stopped by my house today saying the engine is his, he bought a chevelle to restore and when he had it apart he let his cousin barrow the #'s matching engine, well the engine ended in another chevelle, that sat at his uncles house, then was given away, then i bought it, so i have this guys engine, he has $25k invested in his chevelle, and can't get the engine back, what should i charge him for it?