That is a very sick G!
As for your questions about the brakes and LSD...
- The Akebonos are good but unless you plan to track the Z you probably won't notice the difference in normal daily driving. The bigger brakes are more to help with brake fade with repeated hard stopping from high speeds. There was a post I have to dig up but the difference between the base brakes vs. sport brakes in a panic stop from was like 2 feet.
- VLSD is okay but it is only a small step better than an open diff being viscous kind. If you plan on upgrading to a real LSD then it isn't worth it. On daily driving it won't engage unless you are doing some spirited driving around winding corners or if you plan to do some red light racing with Mustangs so you won't be peg leggin' and even then sometimes it won't engage fully from a stop so you won't leave two tire marks as you would with say a Torsen or Quaife LSD.
