AFAIK there was no 'truck body' manual any TF year, maybe not any truck year, body manuals were for Fisher-produced car bodies
the assembly manual is not something GM printed, it's a later collation of Line Instructions that were originally issued to line supervisors as loose leaf binder sheets and thrown away as superseded .... the TF assembly manual as we know it was first printed by Golden State Pickup Parts founder Seth Doulten [my copy has a GSPP copyright of 1993] - all the sheets in it are dated between mid-1954 and mid-1955 so it doesn't include any "running changes" for later years and has nothing specific to the '58/9 changes
Bill
