I second trying Fords spare parts dept.
Last i heard they still stocked the metal bumper inserts for the XE, so they might still have the ESP trim you are after.
First Ever Car - '84 XF Fairmont Ghia....Big Luxo Tank, Just Gotta Love that Velour!
Previous Ride- '87 XF S Pak...Now Retired with 305,000 on the clock!
Previous Ride-'99 AU Falcon S,Got sick of the 6...Need a V8!
5/1994 ED Futura Classic 5.0 in Polyneisan Green - One of the last ever built