Problem with the ring style protectors is that it just covers the ring gear. There is a mass buy going on right now for Blue Torch Fab Works Kryptonite Diff Covers. They are $99 each plus shipping and will protect your whole diff.
his buy it now was $85 to start & he states he has more to sell. the bid may go up. but the guy that is winning now could have just bought it outright instead of bidding on it & risking the price escalating. AXE