the housing is from ruffstuff. 1/4” fabricated housing with 3/8 tubes. They r high clearence and pretty tight to the ring gears. The gears are nascar, rem'ed take outs, arb was rebuilt and has a year on it. The engement cog is an upgraded 300m gear. The arb is 35 spline and u would have to cut and put bearing cups on the housing.