I have a 1968 Plymouth Satellite with a 383 4bbl, 727 auto, 8 3/4 rear, 3:23 ratio, dark red metallic in color with dark red interior and was wondering how many were made. What numbers do I need to go by to research this. The seats have been recovered so I hope the build sheet is still there. I haven't had time to look for it. I asume it would be under the rear seat? Please help. All info is greatly appreciated.  

Sounds like a nice car.

Satellite's were popular in 1968, but I would say your's is pretty unique with the 383 HP engine.