I think moodman's point is most people don't have stolen parts, so its not an issue for them. So it's kinda like a deterrent for dirty thieves that like to speed as well. It's also kind of a shoddy way of just wiping your hands clean as well.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne