Handcrafted from aluminium by Kilkenny Castings, thermostat housing base is made using a sand casting process, rather than a diecast machine. The gasket surfaces are precision-machined (not linished), drilled, and tapped holes are machined using a CNC machining center. This housing is suitable for the Ford Cleveland V8 302 351 Falcon XC XD. Cheapest on Ebay.