WE HAVE NEW 9.3 PONTIAC AND OLDSMOBILE 57-64 ERA THIRD MEMBER POSI UNITS. CARRIER BEARINGS INCLUDED AND INSTALLED AS LONG AS WE KNOW THE RATIO YOU WANT TO USE. RATIO 2.69-3.23 AND 3.42-6.14 CARRIERS 400 POUND PRELOAD HEAVY DUTY CARBON FIBER CLUTCHES HARDENED SPIDER GEARS AND CROSS SHAFT LARGER CARRIER BEARING HUBS COMPLETLY UPDATED BETTER THAN FACTORY DESIGN UNIT COMPLETELY REBUILDABLE DOWN THE ROAD ALSO IF NEEDED!!! We can build you a complete third member with NEW 3.42 3.64 3.90 gears also