If you are going with a air oil cooler yes you can remove the wrap around pipe on the back of the head to the oil cooler. Get a 2jz-ge turbo side pipe, it ends at the back of the block on the turbo side (doesn't go around to intake side and you still have heat). Remove the nipple on the intake side block for the oil water cooler and get a plug for there from a 2jz-ge. It's 3/8 BSPT not NPT so better to just buy it from Toyota/Lexus like I did the pipe and plug. Then remove the nipple in the front of the head on the intake side, tap it for 1/8" npt and plug it as well. Then you are done!
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