I have a pair of Sport 500 turbos that have low miles, but they smoke. The housings are perfect and since JWT doesn't have to do any machining they will replace the CHRAs for $1200. That is exactly the same as when you buy a new set of Sport 500s except they don't have to do the machining again. I want $500 for both turbos. That makes a brand new set of Sport 500s for $1700 (vs. $1950). If you were planning to upgrade to these, this is a great way to save some money without getting used turbos.