Once you have finalized the position of the fan, radiator and overflow tank, install the air compressor and its bracket, the power steering pump (it bolts to the bottom of the bracket) and then the radiator assembly using the upper support brackets. Check all of your clearances again and then install the upper and lower radiator hoses using the supplied clamps. These may need to be cut to fit, but ours went in without modification. Top the system off with the Evans NPG+ coolant and install the supplied 7-pound radiator cap. Make sure you use the ECS piece, as the stock unit has a different pressure rating.