Hi,
I asked a similar question. Got some good advice and responses from other members.

Check this thread and see if it might answer your question, or give you a direction!
http://www.airforums.com/forum...ion-23308.html
Also the plastic moulding if it is the "t" type can be found here:
http://www.outwater.com/outwater.html
We changed ours, my husband has posted a zillion pictures and whatnot on his thread about floor replacement... you can see what he decided. Find him as NorCal Bambi.
"Mrs. NorCal Bambi"