Found a 70 340 for sale here locally, bare block thirty over with pistons...was gonna pick it up then went and saw it, #8 cylinder at the bottom has a nice sized chunk out of it, looks like at one time it lost a rod, no visible crack, and it looks like this happend before the last bore, no rough edges or anythings...is it still worth buying or should I just let it slide, guy said I could have it for a hundred bucks....