Fixed persistent thermostat housing leak.

Like many others I have fought the persistent leak from my thermostatat housing, although a minor leak it is very aggravating.

I tired a factory aluminum housing, an offshore chrome one, the offshore chrome one machined flat (only to warp again) in short order, "The Real Gasket" (sealed great until it blew out twice on backside bathing entire under hood with coolant). As well as the "Real Gasket", I tried stock paper gasket dry, with rtv, using Gasgacinch, shellac, etc.

I now have a Billet Specialties aluminum housing with o-ring, so far so good!

Intake is Edelbrock Victor W2, has some very minor pitting (as per usual) around the sealing surface.

I use Evans Coolant, low pressure cap, and factory water pump.

Will post photos later.