Are you sure you can't reach the bolts when the diff is in?
TIS says that you only have to remove the drive axles and then you can reach the bolts.
I've fitted polyurethane bushings, these don't have this problem as they act as a bearing, not a bushing.
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Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
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