numbers alone the chevrolet 12 bolt rear end is the most popular in racing with ... racecars using mw s exclusive 35-spline axle/spool package and the addition of the ... that include ductile iron castings 4130 tubes 3.062 or 3.250 main bore caps with ... /strip pkg .2709.12 with masterline axles eaton posi 8620 gears no brakes 58000- ... superlight hi-torque gun drilled 11/16 axles pro gears ta cover no brakes 58000-r ... pkg .3021.43 with 35 spline hi-torque axles spool pro gears no brakes gm 12 bolt ... ktre bare housings both utilize 4130 tubes and can be assembled with your choice ... .1076.00 dts housing with 4130 tubes and any mw housing ends 3.250 bore ... housing .1076.00 dts housing 4130 tubes and any mw housing ends 3.062 bore ... easily installed on stock 10/12 bolt axletubes after housing end is trimmed with ...