Re: change out drive from omc to merc
Howdy,
I removed an 87 OMC 460 King Cobra from my 87 211 Liberator and replaced it with a 97 454 Bravo III.
As indicated, I only needed to drill 2 additional holes for the 2 additional studs in the Bravo transom.
You might want to inspect your transom for water intrusion (and possible rot) and you 'll probably need to fill the side engine mount holes with epoxy/glass mix and redrill them for the new engine but that's about as complicated as it gets.
Cheers,
Rick