Yes you can but it requires some modifications. Depending if your 04 has front leaf springs the lower rad hose connection is in a different spot on new motors due to them using coil springs. The icp sensor may need to have its harness modified. I believe it would be easy to swap front covers between the motors to accommodate the water outlet or you can modify the existing lower rad hose with a piece of pipe and hose clamps. The newer motors are quieter with the better high pressure pump and noise dampening oil rails on the injector.