They made them in single legs, yes, but did they ever install from the factory a3:55 - 3:08 or any thing lower than a 3:73 in a posi? You can get aftermarket 3:73 gears that fit a 4 series posi unit for this rearend, but I think from the factory the 3:73 and 4 series gears all used the same posi section. Does this make sense, or am I all messed up?