The MTA Long Island Rail Road (LIRR), on behalf of itself and New York and Atlantic (NYAR), is requesting information from potential manufacturers regarding their interest in the complete remanufacture of their existing fleet of Work Locomotives as follows: Seventeen (17) LIRR MP-15s equipped with Cummins QST30 Tier IV Power modules or an approved equivalent. Option for procurement of up to two (2) additional MP-15 cores remanufactured and equipped with Cummins QST30 Tier IV modules or an approved equivalent. Four (4) NYAR GP38s equipped with Cummins QST50 Tier IV modules or an approved equivalent. Option for procurement of up to four (4) additional GP38 cores remanufactured and equipped with Cummins QST50 Tier IV modules or an approved equivalent.