I'm considering selling my 2007 Gulfstream. It is in great condition. If anything, it could use an upholstery clean and refresh (some torn seams on a couple seats). It has twin Yamaha 150's w/ about 800 hours on each.
It has a Furuno TZT2 mfd and radar as well as a Garmin 840xs / Airmar B175HW transducer. Furuno and Icon VHF radios, Well equipped. The second picture shows the bait tank set-up that can be easily removed is you don't want it. I also installed Gatorstep (like sea deck) in the cockpit area.
The boat runs great and has a great ride. Best fuel efficiency I have seen around 2.3 mpg with a light load in calm water. I would say I typically get 1.8 mpg - 2.0 mpg with a typical load in average Pacific waters - cruising around 30 mph / 4,000 rpm.
If you have any interest, I am happy to send plenty of pictures and talk about the boat in any detail. I have not studied the market much, but initial thought is $85,000 ish with the trailer. Boat is in Southern California.