On the inside of the rear of the wheel well, there is an outrigger that you could use metal screws and mount the mud flap from the inside of the wheel well. A good flap will flex only so much, but at the same time, even with the gear near the wheel well, it should still clear it, if you mount the mud flap from the inside on that outrigger toward the rear of the well. Of course you could also place a piece of metal or plastic there as well, but I personally like a good rubber mud flap that doesn't flex too much, yet still gives way if you hit something. I've considered this many times for the Safari and it seems doable..... It wouldn't take a big flap either...you just need a few inches (maybe 5 or 6) lower than the well itself to deflect any projectiles.
PS- if you do go that route, also use Vulkem or some sort of good caulk to seal the screws in so that water and such doesn't get behind it and rust out the outrigger prematurely.
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