twin 225's on a 23 scepter

[Mariner]

The 23 is a 1979 model (Scepter or Tsunami?) and has an heavy welded top over much of the cockpit which probably adds a couple of hundred pounds. Running a single 225 might be a sensible option (and carry an auxilary.) Having an extra motor you can switch out in a couple of hours if you need to go fishing is a plus. (the 225 motors are close on the existing setup and aren't couterrotating)