Complex sentence: A year after, in 2004, another Mazdaspeed model was offered, the Mazdaspeed MX-5 Miata; it too was released only in the North American market.
Split into simpler sentences: A year after, in 2004, another Mazdaspeed model was offered. It was the Mazdaspeed MX-5 Miata; which too was released only in the North American market.