Every Ford that was built with 4.10/D44 had the 4.09's in the front, never seen a set for a 60 stamped with the 45:11 before make sure you have the right size R&P before you tear it down. I heard that some guys who run alot of mud run a slightly higher gear (faster) in the front to help with steering/understeer, some say thats why Ford did the 4.09/4.10 thing but as stated above its to close to make a difference.
