Why should I not go to an 8.8 rear?

The 8.8 weighs about #70 more than a 8 3/4 and has the funky rear entry C clip axles. Other than that, its a good swap. mod and bolt up with out welding the pads on, turn axle on loose bolts to match pinion angle needed then tack pads. Remove and finish welds. bank the $500 you made in the flip.....