just did this so ill share some info
so bassically start by releasing any pressure in system:
remove plastic screw-on caps and push it like a tire valve stem
then basically unbolt the unit from the block
starting by removing the belt from the little wheel that applies tension, unbolt (but not all the way) the wheel from the front then releive tension from the bolt on the top.
every thiing else is obvious except the ambiant temp sensor mounted on the cooler fan infront of the rad
mount it here and keep it plugged in or lose the use of your heater!!!!
if anyone needs pictures of ANYthing to do with this topic i will be glad to get pics up and help
dam thing weighs alot when u add up all the hard lines the piece on the block, and the cooler and fan on the front. plus you will have more working room, especially if yours does not work
thanks for pictures of temp sensor "Hotred" from celicasupra.com and other members who helped me get info/pics