I have been looking at the Lincoln LS 06 parts diagrams on the Ford parts websites, but the ones for the cooling system don't seem to have all the parts listed. I need a gasket to go between the thermostat housing (upper) and the thermostat housing (lower). I see various gaskets on parts websites. Not sure which ones I would need or their part number. Looking at Jaguar parts diagrams, the thermostat housing seems to look different than the one in my 06. Any recommendations?