A number of variants are already created about the fighter’s lifespan. These have integrated the T-45A, and that is a two-seat variant also utilized by the US Marines, plus the T-45C, an upgraded Variation by using a glass cockpit and other augments, which currently serves like a design for T-45s http://www.drugoffice.gov.hk/gb/unigb/kowear.com/american-fighter/