A buddy of mine is a junker...grabs up and sells 8 and 9 inchers. He has occasionaly found a posi in a Granada, rarely though!!!!
Ford rearends with factory posi's had the letter L within the gear ratio. 3L73 9 = 3.73 gear 9" 3L55 9 75 = late model 9 3/4 RG w/ 3.55