Thanks guys, I have two but they both look like they've been leaking, you know, green hue/crust around the base. I cleaned one up & was thinking about pressure testing it under water to see if it leaks, just haven't done it yet.

I put the whole heater box back together with new foam & cleaned out & tested core so thats the last part I'll need. I know nissan says NLA but has anyone found new ones here ?

How bout you AU guys, can you buy a new one at a parts house over there for a coupe?

Dave, thanks for the offer, I appreciate the gasket you sent as well. I've got to heater boxes as well along with 2 used control valves.