Includes choice of housing ends, steel end bells, steel tubes, 30-spline MasterLine axles, bearings, Eaton posi, spool, 8620 street gears and 1350 yoke. There are many items that can be interchanged to get your specific wheel to wheel width (from 33" to 36" and 38" to 42"). To order, please collect your dimensions (wheel-to-wheel and bolt pattern), then call 1-866-508-6394 or contact us to place your order. Installation - Service instructions can be found on Service Bulletin #0054.