I had a 454 that was 10 years old. It had the bravo 2 drive and was a great combination. My boat was a 26ft 26deg deadrise, raymond hunt design with a narrowish beam.
Loved: the economy, the fish raising deep rumble at trolling revs, the awesome reverse stop with the big prop and torque, simplicity of the engine systems, the eutectic fridge and frezeer running off a car compressor, the cheapness of mostly automotive parts, the full width boarding platform, the usefulness of the engine box as a seat and a bed( I made extensions that made it the most comfy bed for the skipper I've ever owned), the sound and torque of the V8.
Disliked: Lack of room in the cockpit, Inability to spin the boat, lack of technical knowledge for the leg,Constant attention to several belts,Inability to lift leg high enough for skinny water, Probably unecessary worry about fire on board, Single motor, Loudness of the V8 at cruise despite numerous attempts to quieten.