I think it's safe to say you'd have some interest, but 50 seems like a pretty big order for an untested part that MUST perform as well as stock, and...
I would not be dismayed at 30k mileage, and you'll only know the state of the motor by taking it out. I would feel pretty awful selling it in such as...
Is this more of an age or mileage issue, or a little bit of both? I'm about to rotate the motor (for the last 6 months), and may just pick one up in...