I don't know if anyone's mentioned this, but I took the cover from my bent D30 and cut it down to make a diff guard for the front. Cover was free + cost of a cut off disk + a hand full of hardware to mount it. Less than $15. You could paint it and be under $20.
Jeeping - The art of getting dirty & going broke while slowly heading nowhere, and taking all day to do it.
97 XJ SE - The War Wagon
98 TJ - Mall Crawler/Light Trail Rig