THose oil cooler plates are all over Ebay and such used from the Mustang SVOs, SP mustangs and Thunderbirds.
I got one for the stang for the OT days this summer from a Tbird SC. It has some tabs there were there to keep you from running the PH16 size filter (shorter PH8). Instead the stock was the 3600 thin small one. Cut the tabs and bam! Then tie in after the heatercore before the H2O pump and done. Pretty easy install, just took a bit to bleed the air out of the extra hoses.
Anyway, if you want on and have room, Ebay you can find one.
But personally I would be pissed about the lack of the remote oil filter. I have one on my 97 stock and boy is that thing nice! 10 minutes I can change the oil and filter. One hour on CJs 97 w/o that remote system. That was a bad bean counter move personally!