Anyone found an aluminum thermostat housing for 3.8?

[cow-lumbus]

Looking to replace t-stat and figured I'd do the housing too...all look like cheap plastic and if I'm going to buy OEM I thought I would look for alum, but don't see such a beast. Anyone bought/found one?

Thx.

 

[BLACKJKU]

I was only able to find them for the 3.6's in my search.