The only prob you are going to have with selling this tuner is that is the custom tunes from ID will not work on just any truck.Even tho if you put your stock tune back in your truck the person you will sell it to has to have the same stragity(spell) code that you have and the chance of that is 1 in a 1000. But you will be able to use the factory tunes the sct put on the xcal as long as ID dint take them off. But if you have anyone interested in your tuner I can get custom tunes from tadd. they will not be for free but they will not be 75$ per custom tune that any one else would charge for a custom tune.