hi, a while back I purchased the above Dana 30 cover. Finally got it in. It WILL fit,....BUT...not easily. first of all, We had to shave most of the fins down, all the way to the main body of the cover, mostly the middle and drivers side. This gives you about 1/4' clearance to the crossmember, ok, but NO WAY can you ever access the front fill holes.. So, I had a 1/2" NPT hole drilled into the Passenger side of the cover, with a new plug, at the correct level. Now it can be easily drained, bottom plug, and relatively easily filled, side plug. . A lot of money and time to fix a not really huge problem, but there it is. Most Eagle owners neglect the front diff, just because it's so hard to drain and replace fluid, Now I have no excuse. Believe me, when I opened this diff up, it was (about 1/2) full of the most ungodly looking crud, dark brown, with chunks! I can't really say, but it may not have been changed since the car was new, in 1984! It was still somewhat greasy, so I think my diff is ok. Whew! On a similar note, I also rebuilt my Power Steering pump, yes, I rebuilt the one in the car,did NOT get a new one. Same deal, the old fluid in there was HORRIBLE, and chunky. Very glad I did it, a PS rebuild kit is only about $15., mostly O-rings and a seal, available anywhere, but the job is a PITA, mostly due to the difficulty of removing and reinstalling the pulley and main shaft bushing. Moral of this story is, don't just top up your fluids!, but flush out the old and replace with new. Your car will thank you! good luck, gz