Help with M3 modification

I just got an '01 M3 and am planning to make some customizations. Here are a few parts I wanna know about:

1. What are the best performance rims (also, do u recommend 18" or 19")
2. Best racing seats?
3. Best body kit? (I want an aggressive look, yet not totally altering the M3 style)
4. Best exhaust kit?
5. I dont want to mess around with the engine yet, but I was wondering what modifications have other people made, and what were the results?

There really are no "good rims" some weigh less and some have more strength then others but your stock rims should fit your need.

Seats can be a personal preference. Which ever hols you more comfortable and holds you down is the best.

There is no 'Best body kit" SOme might argue that their cabron fiber fins on the front bumper hold them down while there doing 80mph but realisticaly most of the time body kits are cosmetic.

Exaust. There are many out there so go price them around. THe best one might be more then you wana spend.

Engine. Theres not many things that you would want to do to the engine since almost eveything is computer controled. You could get a new air box and maybe a upper sway bar.

www.dinan.com your answer.. as far as body kits... Hamman does it up the best for M3s(check spelling on Hamman, might be Hammann or Hamann lol)

Uuum...Dinan financial services? I think u posted the wrong site, no sweat though. I know the brand u're talking bout.

I had 19" Vellano wheels on my car 19 8.5 F and 19 10.0 R w/245-35-19 and 275-30-19. The car looked sweet. I don't have the car now I sold it.

a very good looking set of rims for the '01 M3 is the BBS RS-GT Diamond Black wheels. look them up on turnermotorsport.com