Looks good Juan (sorry for disappearing straight off last night, but it was 11.30 here and my body clock was crying out for sleep).
If I could add one tiny suggestion, try squashing the 20 so it's shorter but fatter. And I fully sympathise with you about lining up the stripes.
I've not got the M1 yet, so one quick question. All the M1's I've seen either have no body kit or the Forza kit, yet the one in your pic is the one I always associate with the M1. Considering we couldn't get a Forza kit on a BMW for love nor money that seems odd - am I right in thinking they didn't include the BMW kit in the game?