I replaced the rad at the same time so I just dropped it all out the bottom then put the cooler in and the rad after, then had to measure up the pipes and cut them down a bit because the 4x4 cooler is deeper, and found out after fitting that I had nowhere to fit the dump valve coz the 4x4 doesnt have the outlet on the intercooler for the dump valve so I am running without one until I get some new boost pipes with the fitting on