What are your favorite modifications or upgrades for your E46? If you had $500 to spend, how would you use it on your E46?

I made this short video showing my four latest updates to my 330i ZHP which include:

E46 M3 factory strut bar
E46 M3 S54 oil cap
Fresh NGK spark plugs
ATE type 200 brake fluid flush

Other updates coming soon:

New Bosch oxygen sensors
Firestone Indy 500 tires




Link: https://youtu.be/Rdkgn2SP8AQ