According to Flex-a-Lite, this radiator comes with its own thermostat (though technically it's a thermistor), wiring, and hardware. While this kit does hook into the stock wiring harness, it's just to send a signal back to the PCM to avoid a CEL. The fans are adjustable and can be set to come on at 160° to 240°. This radiator/fan system should work with what you're trying to do, though you'll have to remove your current setup.