Im in a position to buy the heads off a 99 explorer. The junkyard man said the explorer had 13,000 miles on it, the block was cracked so they took the heads off. He said they are either $250 for one, or $300 for two. Being that they have 13,000 miles on them, and the block they came off of is cracked, is that agood deal. wood the cracked block affect the heads?
