Specifications include, but are not limited to: 5.1 SIZE: Acceptable makes and models are as follows: Chevrolet CK2500, Ford F250 4x4, Dodge Ram 2500 4x4 or approved equal. 5.2 GVW: The manufacturer's certified gross vehicle weight (GVW) rating shall be not less than 9500 lbs. 5.3 ENGINE: The trucks shall be equipped with a V-8 gasoline engine (minimum) and a piston displacement of 6.2 liters. A heavy-duty radiator and engine oil and transmission cooler shall be supplied. 5.4 TRANSMISSION: The transmission shall be a minimum of 4-speed automatic type with transfer case, skid plate and four wheel on the fly shift. The gear selector shall be steering column mounted. A heavy-duty transmission oil cooler shall also be provided. 5.5 AXLE: Complete with front drive auto locking hubs. 5.6 FRAME: All frame members shall be of proper strength and construction and in keeping with a design incorporating these specifications. 5.7 BRAKES: Complete with power disc front brakes and power disc or drum rear brakes. The trucks shall be equipped with a mechanical emergency or parking brake.