Specifications include, but are not limited to: PUSH FRAME Push frame must be designed to hydraulically reverse the moldboard in an arc from 30-degrees left to 30-degrees right from a straight-ahead 90-degree position. Frame will be a triangular shape with a swivel plate assembly that attaches to the truck's plow hitch. The forward point of the triangle will attach to the reversing assembly by means of a pivot bushing. 1. SWIVEL PLATE ASSEMBLY A. Hitch pin mounting ears must be on 33-1/2 inch centers with each ear being 1-inch thick. B. Holes in the mounting ears must be 1-9/32 inch positioned as per the prototype. C. Mounting ears must be welded to a 7-inch MC (Ship & Car) channel weighing 22.7- pounds per foot. This channel will attach to and swivel against a 1-inch x 6-inch x 33- inch swivel plate. No exceptions. Swivel plate corners may be rounded. D. The 7-inch channel must swivel approximately 4-degrees up and down on a 1-1/4 inch x 5-inch, grade-8 bolt. The hole in the channel and swivel plate must be punched 1- 9/32 inches in diameter. Swivel action must occur mostly on the un-threaded shoulder section of the bolt. A castellated nut and cotter pin must be used to retain the bolt and allow for adjustment (welding will not be accepted). E. Washer, a 4-inch square x ½-inch thick steel washer must be welded inside the 7-inch swivel channel as reinforcement for the area around the swivel bolt. F. Swivel stops, there must be a reinforced 3-inch x 4-inch x 5/8-inch angle iron 7-inches long welded at each end of the 7-inch channel and wrap around the ends of the 1-inch swivel plate. Reinforcing must be an “L” shaped 1-inch thick section welded to the outer midsection of each angle. Each angle must be capped with a 3-inch x 4-inch by ½-inch thick minimum steel plate welded in in place to act as a stop. G. Stops must provide the plow blade's outer tips with 8-inches of travel, approximately 4- degrees of oscillation up and down.