A Body Hemi Swap Radiator

I'm Installing a 6.4 Hemi factory crate engine in my 69 barracuda, with a Manual trans and classic air with a trinary switch. I'm looking for recommendations for a complete package, radiator, fan, relays etc. I see your relay kit includes a temp switch. Does that mount in the radiator or would i need to locate it in the thermostat housing. Thanks for the help...