If you cvan get them for $250 and you know for fact they are in good dhspe and need noting then go for it. Even if you dont use them, you could re sell them and get your $$ back and then some. Chances are your block is not decked so far that you have any worry with thouse heads. You do need to measure as Tech stated on because you need to have a good idea of compression befor you order a cam. But by all means if the heads are in greaqt condition pick them up...if you dont use them shoo tme an e mail and I will but them from you.