http://purplecranium.com/
AlekG had originally contacted them to make us a differential cover guard (I'll let him recall the details of that once he becomes a member). After a short development time, PC came out with a spider that fits both the larger axle found in the EXT and the 8" found in the SWBs: http://purplecranium.com/i-88751-envoy- ... guard.html
I got around to installing mine a month or so ago:

While I did that, I changed out the gear oil for some 75W80 Royal Purple gear oil. It makes for good peace of mind knowing the differential is properly protected, and properly lubed...







Pine Barrens Wheelin!