I was looking for a good k20 to swap into my civic. My friend happened to have one out of a Type S that he said he'd sell to me for cheap, well actually not bad, but the only problem with it was that it blew a spark plug out of the top of the motor. I knew that Fords do that all the time and shops have stuff to deal with that kind of problem. So I bought it. Later I found out, with a borescope, that there were bits of spark plug embedded in the top of the piston. This saddened me. Although this motor may be bad I wanted to build it from the ground up anyway and I have confidence that the bottom end of this motor is still good. So new pistons and a hone should be alright!