If you dont plan on flipping them back there is nothing cheesy about it, the hanger CANT move because you widen two holes and narrow two holes, NO WAY for it to move. Of course it modifies the pinion angle what would be cheesy is if you didnt check your pinion angle if you came up with vibration or weren't for sure.

Now that being said the Purchase products will work great without modifying the car, but they will still mod your pinion angle regardless.