Lol I found and ordered the aluminum one from rock auto...and I'm well aware. I'm taking your advice on this one joe...but do you have a part list for the gen 1? Shit is hard to find. (I also am surprised it took this long ...looks like mine was all original)Not new at all. Amazed that it took this long for you...
Re&Re - Jag Aluminum Upgraded Thermostat housing - GEN 1 V8
Just as soon as you replace that, another plastic cooling system part is going to blow, and after that another, so so on. Replacing them ALL now is the least expensive thing you could do...