My engine has the internal knock of doom, given that there's some other odd behaviors, instead of attempting to have it rebuilt it seems the way to make sure to fix all it's problems for good is to have a remanufactured long block put in. I've been googling and came across this one from S&J Engines. They have a good looking warranty which makes me highly tempted to go with this one. How good are these guys? If they aren't good can anyone recommend anywhere that is?