My mods are mostly less is more. The goal is a 10% weight saving. Overview, with Marelli Carbon Antenna (this had to be modded and machined to be lighter than stock

).
Turning full nuts down to half nuts:
Hollow drilled screws:
Wiper linkage drilled with Ti screws:
Misc parts lightened and weighed (before):
After:
Ti Screws:
I've done more but you get the idea. It's all logged in a spreadsheet, I'm up to about 35kg so far.