Sections 8323, 8324 and 8326 of this title shall apply to and be for the benefit of any member of the State Police retired as of June 28, 1963, or at any time thereafter, or to the surviving spouse, minor children or sole dependent parent, as the case may be, and such pension payments, as adjusted from time to time as provided in this subchapter, shall continue so long as any person is entitled thereto by virtue of this subchapter.