RuffStuff Specialties R1037 3 Inch Diameter Rear Axle Simple Swap (Small tube 9", Dana 44HD, Toyota) U-Bolts Measure 3" Wide x 10" Long x 5/8" Thread U-Bolt Plates, Shock Brackets, And Spring Perch Pads Are 1/4" Steel Plate Spring Perches Fit 2 1/2" Wide Springs