75 Dart 360 Sport factory crank sunroof

Hello all,

I'm new here but have owned a 1975 Dodge Dart 360 sport with factory crank sunroof, and rear seat fold down options for about 26 years. My father bought me the car when I was 14 so I'm sure there's no reason to speak of the priceless value this car has to me. However, that said I've read quite a few threads about Duster and Dart 340 cars with these options, and the rarity of those. But I'm wondering how rare are the Dart 360 sport models with the sunroof and fold down seat options? Anyone have an idea on production numbers for the Dart 360 sports?