i think it is a slang name for a subway train
Metro is formerly known as Metropolitan Service District, the regional governmental agency for the Oregon portion of the Portland metropolitan area
it is a CITY AREA
you will need to compare the engine code stamped on the engine block, and then you will need a book/manual that will tell you if they are compatible or not.
go to the metro place.then give them your phone in they would swit it over for you