There is No Core Charge & you do not need to return your old one.
Old Stock Remanufactured SMS 5160 Starter.
The only applications for this in the SMS Catalog is,
1983 Fairmont with 200 6cyl with High Altitude,
1978-81 all models with 200 c.i. 6 cyl & A/Trans.
Mercury
1983 Zephyr with 200 6cyl with High Altitude.
1982 all with 200 eng. (Except XR7 with PEB Trans)
1981 All Models with 200 eng. & A/Trans Built before March 1981
1978-80 All with 200 eng. & auto Trans