Hello I will help you with your question,
There is a TSB and new pipes to address this procedure,
Service Procedure - Front No. 1 Pipe Assembly Removal
Raise vehicle on lift. Cut the two flexible coolant hoses between the front coolant pipes and center coolant pipes as shown in the photo, and allow coolant to drain into a large container.
NOTICE: A large amount of coolant will drain from these two hoses.
Remove the catalytic converter as shown.
Remove the splash shield from the sub-frame on the RH passenger side.
Remove the bolt holding the power steering lines on the RH passenger's side.
Detach the O2 sensor connector from the coolant pipes, then remove the (one) nut and (two) bolts that attach the coolant pipes to the body.
Lower the vehicle leaving the drain pan in place to catch any additional coolant.
Remove the air filter assembly and intake hose to the throttle to access the area where the two heater hoses attach to the engine.
The hose connections are below the thermostat / ECT area.
Cut the two hoses just removed off of the original coolant pipe assembly as close to the coolant pipe connections as possible.
NOTICE: This will aid in removing the coolant pipe assembly in the following steps.
Remove the clamps and remaining pieces of hoses from the heater core assembly.
Raise the vehicle on the lift.
Loosen, but DO NOT remove completely, the two FRONT subframe nuts.
Remove both rear sub-frame nuts and carefully pry the sub-frame down about 1 inch on the driver side, and about 1-1/2 inches on the passenger side.
NOTICE: Do NOT pry the driver side down further then recommended, as the steering rack is still attached, and may be damaged!
It may be necessary to hold the sub-frame down on the RIGHT passenger side while removing the coolant pipe assembly. To accomplish this, you can place a shallow socket that is 1-1/2 inch in height between the body and sub-frame assembly on the RH side, or some similar 1-1/2 inch thick material.
Service Procedure - Front No. 1 Pipe Assembly Installation
Install the front coolant pipe assembly. Start by inserting the hoses that connect to the engine first, and carefully work the remaining assembly up into place.
Let me know if you have further questions about this procedure
Thank you
ASE Master Technician
ASE Master Tech 10+ yrs, AAS Automotive Technology, Factory trained Asian specialist