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<p>This is a false choice. There are mechanics who are both qualified AND honest.</p>
<p>Bottom line, you intend to deceive. You can call it advantageous or expedient. But don’t try to call it moral.</p>
<p>ETA – It seems to be important to you to frame this as a moral decision, so look at it this way: Anyone can do the right thing when it’s easy. Integrity is doing the right thing when it might cost you something. And BTW, there’s no sliding scale; you are either a person of integrity or you’re not. Are you?</p>