Well I have a parts book and the part numbers are different. You can interchange a 1971-72 Satellite/Road Runner body with 71-72 Dodge Charger body...only (roll up style with roll up style)....and fixed style with fixed style only

and you can interchange 73-74 Dodge Charger with 73-74 Satellite /Road Runner body only (roll up style with roll up style)....and fixed style with fixed style only

According to my parts book.