http://www.4wheelparts.com/Drivetrain-Differentials/J8-Dana-60-Rear-Axle-Assembly-4-10-Ratio-35-Spline-With-Track-Lok.aspx?t_c=12&t_s=475&t_pt=7572&t_pn=MOPP5155083
(http://www.4wheelparts.com/aux_incl/images.ashx?i=P5155083.jpg&partNo=MOP&w=400&h=400)
$3,600 Wowzers!
That's competitive with aftermarket for a D60, but still about 4x what I have in the car and all the parts on the shelf (including a D44 rear...)
8.8 from an Explorer is cheaper and easier! 3.55 is rare. Usually 3.73 or 4.10.
The military Jeep uses leaf springs, so I figured it would be closer to what an eagle needs than the Ford rear.
I haven't installed it yet, but all I've had to do to the D44 so far is swap the shock brackets to the opposite side of the axle.