Knowing what you paid for the hacker sell it with the slayer. It is not enough motor for a MT. Keep the neu. Or sell it in its own auction. Sell your truck as a roller, and sell the electronics separately, more money that way.
I have to agree with James on this one. Just sell your roller and hang on to the electronics. You can use them in a futur project or sell them seperately if you need the $$$. I hate letting go of good equipment when I know it may come in handy at a later date.