Does anyone know what driveshaft I need for a 904 to 8.75 rear

727 - 8 3/4 in 108 WB car is 45 1/2" Duster or Demon, Valiant 4 dr
904 or 4 spd - 8 3/4 in 108 WB car is 48 1/2" Duster or Demon, Valiant 4 dr

Add 3" for a 111 WB car such as Dart or Scamp