Specifications include, but are not limited to: ENGINE: L9N CUMMINGS CNG (CALIFORNIA SPECS ONLY) CAB SHELL: RIGHT HAND DRIVE ONLY, WITH THE LATEST ERGONOMIC INNOVATIONS. TRANSMISSION: ALLISION: 3000 6-SPEED FRAME:THE FRAME SHALL BE HEAVY DUTY, REINFORCED DOUBLE CHANNEL FULL RAILS THAT START AT THE FRONT OF THE FRAME AND CONTINUE UNBROKEN TO THE REAR OF THE FRAME. THE FRAME SHALL BE CONSTRUCTED OF ALLOY STEEL, WITH AN RBM OF NOT LESS THAN 2,100,000 IN LBS. PER RAIL. A CROSS MEMBER SHALL BE INSTALLED AT THE EXTREME END OF THE FRAME. IF HEAT-TREATED FRAME IS PROVIDED, IT SHALL NOT BE HEATED OR WELDED DURING THE BODY OR LIFT INSTALLATION. ONE (1) PIN SUPPORTED AND BRACED INTO FRONT BUMPER PIN RAILS SHALL BE CAPABLE OF TOWING FULLY LOADED VEHICLE, UP TO 25 TONS. BRAKE RETARDER: (WOULD BE PREFERRED) EITHER ON ENGINE OR TRANSMISSION PTO: TRANS MOUNT ONLY CHELSEA 890/897 AUTO SHUT OFF @ 1500RPM WITH 15 GPM @ IDLE GVWR: 51,000 LB WHEELBASE: 210” VEHICLE LENGTH: NOT TO EXCEED 400” AIR LINES: MUST HAVE COMPRESSION FITTINGS ON BOTH ENDS IN ALL POSITIONS.