Thanks for your help guys. I have not yet bought the car, but I have found out a bit more. The engine was not replaced, just rebuilt. Haven't gotten the complete list of what was done yet (gonna go out monday to have it checked out by my own trusted mechanic and then if its all good then i'll buy it) but I know it has at least a timing belt and some kind of rings and a "bunch of other stuff". So i guess this is okay, not really sure why the engine needed all of this work all at once. Maybe the owner neglected it for the first 150k miles? Checked carfax, its clear. I started the engine, revved it up a bit, won't get to drive it til tomorrow, but everything sounded okay (I love the way the v-tech sounds through the rpm range). Thanks again guys. Oh, and one more thing. This mechanic is about 2 miles from my house, so I feel pretty comfortable trusting in his work cause I can always go back and complain to him or whatever. The main way they advertise is word of mouth, so I think they will value their work a lot.