Sea Ray Transom repair

[Offshoreboat]

Hi,I have bought a used Sea Ray 28 ,I must replace the two 3.8 OMC engines and the two OMC 800 outdrives.Wich is the best way to repair the 2 big holes in my boats transom so I can install 2 Mercruiser engines and outdrives or later OMC Cobras?<br />Thanks on advance for help<br />Roland