I haven't heard this one yet in the Z/28 section... CF one piece drive shaft. reduce some driveline weight, and at the same time you get rid of the slop that comes with a two piece.
OE wheels are beautiful, but not the lightest at 25-27lbs ea. We have forgeline Ga1R-OL and they are right under 21lbs ea IIRC
Optic Armor front and rear windshields will save 20 lbs off the top of the car.
all depends on how extreme you wanna go
