what are you going to gain from changing the brakes?
will you gain anything from swithching the inners for the outers on the 16's or are they 5" in and out?
and with the A9X flares it would be a biggish job to change them, the bolt holes are in different places to the L34 flares
If I go to skyline brakes they take away the extra 20mm, with the commodore brake setup it has the inner shoe/hand brake setup, the skyline doesnt. If you look at Rorys diff, it pretty much goes from the axle flange to the disc, the commodore setup goes, axle flange, inner drum then the disc.
The 16's and my other 15x10's both have 5inch inner and outer rims.
As for the flares ive seen 2 sets that have the same bolt holes but are wider, would just be a matter of finding some.
I dont really want to modify this diff too much, bit of a waste, so I may end selling it if I cant change the brakes or do the flares.