1973 Scamp Rearend question

or 27 spline [ame="http://www.ebay.com/itm/Dodge-Plymouth-Mopar-8-25-8-1-4-Sure-Grip-Trac-Lok-Posi-3-55-Gears-27-spline-/281480409412?pt=Motors_Car_Truck_Parts_Accessories&hash=item41898a3144&vxp=mtr"]Dodge Plymouth Mopar 8 25 8 1 4 Sure Grip Trac Lok Posi 3 55 Gears 27 Spline | eBay[/ame]