ok, my rebuild GTS engine is ready to be installed, and while I have been waiting have been upgrading other systems on the i.g brakes, wheels, tires, wheel bearings. I have a list of new parts going in with my rebuilt engine i.g new alternator, plugs, wires, cap, rotor, O2 sensors, all new cats and exhaust with exception to Magna flow muffler that was already on the car, starter, battery, cables...the list goes on. I am considering upgrading the radiator too and I am not sold on the Mishimoto brand. Are there any other options comparable? Also, is there a particular type of coolant to run that is better than the Mitsubishi brand?