Ira,
I am sorry to hear about your accident and good to hear that you are fine and no one was seriously injured.
Just an option if you are not able to find Mercedes Benz Geländewagen OEM parts, you may want to contact Indra for the 463 bodykit:
Indra
Managing Director
Email indra168id @ yahoo.com
Yahoo messenger:indra_168id
Official website:
indra's Site
Direct +62 818846107
Fax +62 21 5468661
Also at the link below are some photos of a person that used Indra's bodykit on their older Gwagen to update it to the 463 bodystyle.
Photos:
www.cardomain.com/ride/2268283/1
Respectfully,
James Van Thach