The Explorer is an 8.8.The Lincoln Versailles,Ford Granada will fit,but(there's always a but)The Granada,Versaillles 9" rear is a 31 spline tapered axle.The parts are available but not as common as the 34 spline axle 9" rears.The plus side is they will fit most Hot Rods as well as be a drop in for a Mustang.The 8.8 is also a very strong rear,in street trim it is just as strong as the Granada,Versailles 9".Both can be found with factory discs.The 8.8 has been used in everything from 5.0 Mustangs to Explorers,to F-150's.Needless to say the 8.8 is readily available for a lot less money than the 9".