Hussein, I'm really sorry about the situation. Situations like those are always hard to handle and to manage the feelings. But I agree with the other members. Get a temporarily replacement DD car and fix the XR. After so many years of effort and money creating such a unique car you shouldn't give up only because of a stupid piston/ring/rod/bearing, whatever. You have 99% of the hard job done in your car. I know it takes time and effort but you just need to open the engine and check the damage first and you have the knowledge and skills to do it yourself. If you hadn't it would be a much harder task. If there's no cylinder damage that's "easy", just replace the rod/bearings or piston/rings, whatever created the problem and try to evaluate what caused it so it won't happen again. Even if you need to rebore it or put new sleeves on it, go for it. Like I said, 99% of the hard work you have already done on your car so get the strenght to fix it and get it running again. I'm sure you will be pretty happy to have the XR running strong again and I also think that if you go with other route you'll probably regret of not having it fixed Parting out the car would also takes you a lot of time, effort and dedication (not to talk about loosing at least 50% of the investments you made on your car). And it wouldn't be easy from an emotional point of view as well. So, good luck and I'm sure you can do it! You have our support. Go for it!