Are you looking for a core or a whole heater? If you cannot find one, I bought one of those Matrix heaters that Moss sells for big bucks, and never used it because I found an original and time expired on the return. I fit it into an original setting, so you cannot tell that is aftermarket the doors open correct and it hangs correct with a good motor and all that plus it is new. I do not usually sell parts; plus it was expensive. I figured I would use someday, but probably not.
steve