T’Stat Housing ?

After reading alot of info here, I have decided not to use a chrome thermostat housing on the intake manifold of my 340. Would rather not deal with the leaks and all.......

My question is if the cast iron style is still available from the dealer new? Or do I need to dig around for a good used one.

As always, your input is much appreciated. :cheers:
Author: 6pk2goDemon