Tried a quick search- no luck: Does weight of wheels really make much of a difference?

Mostly because I got a 8.75 out of a dart in the back, and I don't think think a jeep rear end would be an improvement
the brake components off of the late model jeep's (all the versions of the cherokee mini suv ++)- the late model jeep's run those 8 1/4's (as far as i know) which somebody pulled the brake set up off of and modified/installed onto their 8 3/4 rear axle. He said it almost bolted in directly.