Bigger dosen't always mean stronger! I would say that an 8'' third may be slightly weaker than a 8.4 taco third but the axles are stronger in my opinion. The differences in strength arent comparable enough to justify buying one over the other. When pushing the limits of these axles, apples and oranges still make juice just a little different taste.
I like apple and orange juice.
I ran my first generation differentials with 5.29s and they held up surprisingly well with 40" Ground Hawgs....
