Have had a bit of schooling (real world), we run in an auto-x down here and it's pretty cool to whip the a$$ around and try to keep from hitting cones. I haven't tried the 540 yet, I'm guessing it'll be a little more difficult then the R/T. Any rate, I've checked the car oven and getting a feel for what mods it has. I know it has these: 1. m steering wheel, 2. 19" Staggard wheels(i didn't see them in the "bmw wheel index")(I get a little rub when I take corners @70). 3. RD Sports front spoiler 4. M grill 5. coil over front and bagged rears (maybe this is normal) 6. M5 trunk lip 7.viper remote start/windows/roof and that's just about it, as far as I can tell. I'll get the Dinan CA relo to bumper kit, maybe some Brembo's, supersprint, 6 disc mp3/dvd lcd for kids, the m5 rear bumper looks a little aggresive for my conservative taste but no cost on the exhaust with a buddy that owns a muffler shop and of coarse "Angeleyes." Also, a few door dings to get fixed.