You've said this more than once, but you are completely wrong. 'Crystal' is Methamphetamine HCl. Desoxyn is Methamphetamine HCl. They are exactly, 100% the same chemical.
If your issue is with smoking vs. other methods of ingesting, we can talk - but that doesn't make them 'different drugs' any more than Nodoz is a different drug to Caffeine in coffee - Desoxyn being smokeable too, of course, though I'm not sure who would bother.
If your issue is with smoking vs. other methods of ingesting, we can talk - but that doesn't make them 'different drugs' any more than Nodoz is a different drug to Caffeine in coffee - Desoxyn being smokeable too, of course, though I'm not sure who would bother.