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360 Wildcat Winter Sprints Rules Update The non-wing portion of the 360 Wildcat Winter Sprints events will run under the POWRi/WAR Sprint Series rules and procedures with the exception of the engine rule and weight rule. Those two exceptions will be as follows: ENGINE -ASCS heads will require a 2 3/16 restrictor, with a length of 3 inches. -Any other head will require a 1 7/8 restrictor, with a length of 1 inch. (must be 23 degree head) -No aluminum block engines will be allowed -No down...more