Minor update on lug nuts. Top post lists the stock ones as "3 lbs". On my kitchen scale the sport package ones (are they all the same?) come in at 76.5g per lug nut, which is 1.530 kg for the whole car, or 3.366 lbs.
Muteki's open-ended tuner nuts come in at 25g (1.1 lbs total), and the closed-end ones at 60g (2.64 lbs) (per mfg specs).
It's not much, but every little bit helps
