I have it in the same place you do. just in the back on the passenger side. I have replaced the splash guard seal on both back doors and figured out it was coming in the front passenger door so when it rains i wedge a towel up to the door and need to replace the ribbon seal tomorrow perhaps. In late June my parents are going to be out of town so i'll have a backup car and probably will take the seats out all over again and take the rear section of the carpet out and sand the rust down and use some of that POR15 or whatever it'* called to seal it.
FWI - PEMs - DP - HF Cat - 3.4/3.5 MPS - 180* - PCM - 104'* - Shift Kit - UD WP - Solid Mount - DR'*
14.222 @ 95.27 - 2.112 60'