Notwithstanding the provisions of chapter 32 of the General Laws or any other general or special law to the contrary, and in order to promote the public good, the Franklin Regional Retirement Board is hereby authorized and directed to credit Robert H. Miner with additional years to provide him with 30 years of creditable service and to use the age 65 factor of 2.5% for the purposes of determining his superannuation retirement allowance pursuant to said Chapter 32. Eligibility for said creditable service and enhancement shall be conditioned upon payment to the Franklin Regional Retirement System of an amount equal to the contribution he would have otherwise owed for said period of creditable service and the additional cost of increasing his creditable service to 30 years and his age factor to 65 together with regular interest thereon, as determined by the actuary. Such repayment shall be made in one sum, or in installments, as the Franklin Regional Retirement System shall prescribe. Said Robert Miner shall be entitled to and shall receive all annual cost of living adjustments to his annual pension to which he is eligible granted under Section 102 of said Chapter 32 or any other general or special law.