I have an MMM bottom radiator connection but am not sure which model it is for. It is a curved piece of 1" brass tube bent to slightly more than ninety degrees. Is this what you are looking for?
it is the fitting in the bottom of the radiator, a rectangular part open on 2 sides inside the bottom tank, changing to tubular outside where the bottom hose attaches. Doesn't sound like yours but many thanks for offering.
Rich is this what you have? If it is then yes please! I might have bought one from you before but it has been lost in the house move!