start looking here:
quick search and you will get a ton more.
I repaired mu oil cooler last month by taking adaptor mustang Gt 2003 and cancelling our cobra oil cooler.
but you will need to cut the head of that adaptor of oil mustang GT 03 , then rotation it that not meet the motor charge .
then conect direct the water pipe & you need to buy small oil fillter ( ex. GMC oil filter ) . AND it work with my no mixing and the temperture is same before.
good luck & don't get panicked. regards,