I've got this M less than a year (March/08) is a 2003 300M sedan, I've been modifying it on regular basis, so far the mods are;

Window tint
K&N FIPK2
RB-1 Nav. system
OEM style spoiler
Indash 6 cd changer
Mobil 1 Extended Performanceoil & filter
Bosh +4 platinum series
3.89 special M gears
EVIC with instant MPG
Sylvania Silverstars (Hi, Low & Fog)
Gas and Break pedal covers
Chrome grille kit (upper & lower)
Roof mounted BMW style anntena (fake)

My future mod will be;

Cross drilled break rotors
PCM modification
Throtle body Modification
18" rims (undecided)
NOS

More to come....sugestions welcome...


Btw I'm not into audio upgrades that much, you wont see huge speakers in the trunk of my M..... Ipreffer performance mods. PEACE!