Despite the fact that we can see a low car on the vid, MaercZ did not had any unfair advantage over other players. The only difference between that mod on the video and one of the approved carmods (made by Firebox, Epoxi or Scorpion) is that his car looked tricky to the people without the mod. Once again - no unfair advantage here.
Due to that, I'm asking you to reconsider his ban.