Here is a brand new AC conversion we just completed on a 2008 E6.
Custom Interior
Custom GM Black Bass Boat flake paint job
Custom Sound System (crazy - 10" subs and the whole nine yards)
Four BMW i3 battery packs, running 98 volts, 130 Ah
8Kw AC Motor
Size 6 Sevcon Controller
Runs 58MPH with six passengers (no we should not do that)