Forum member has a posi for me but, she lives in italy and I need to positively id the parts before I buy...she's gonna send me pics and any # 's or stampings that might help.Is there a way to positively I.D. a posi unit and gears for a 9 3/8" axle. My axle is in a 64 riv and is the drop out center section type...I've heard that there are different size carriers in this rear end.any Ideas,advice?