well im wanting to build a set of twins and im not going to use the 42r in the set up so Im want to sell the complete set up not quite sure how many miles are on it but i know its not many!!! I would also consider selling the headers along with the turbo set up. so this will include everything you need to mount it up to your SD. The mounting set up is custom built by Diesel Innovations this kit is capable of making over 600 streetable horsepower. The set up is still currently on the truck so if you would like to see pics or a vid of the truck running just let me know!! Not quite sure on price I know how much the turbo and headers cost but as a combo just shoot me an offer and we can talk!!