Just walked in the house from doing my oil cooler 5 inutes ago.
Tip1 get a freeze plug welded into the exhaust end of that new cooler.
tip2, Don't be lazy ,,Pull the connector off the first two injectors on each side.
tip3 clean the valley AFTER you pull the turbo but BEFORE you pull the oil cooler, it could save your IPR.
be sure to protect the turbo drain hole in the HPOP.