How unusual is this?
 

My father owns a 1965 Mustang that has a 200 6 cyl. engine coupled with a 4-speed manual transmission. I checked the ID plate and the engine code and transmission code match for that combination. Do any of you own a 65 model with this engine/transmission combo or have you seen it before? This combo seems rare to me.

Its not that rare but the Dagenham 4-speed has no parts support. Whenever one needs work, they are usually swapped for another transmission.