I wanted to see if any of you would happen to know what a newer style (06) 29 fever with a 496mag top speed should be?

Are you sure its a mag and not a H.O.?

Only a 375hp mag. The HO's shows that on the cover "MAG HO".
Guessing around 62-64mph. Small motor for that big of boat.

Wow! That's a Mag. Never seen a 496mag in a Fountain. I would guess 65mph max. Heard the H.O. runs upper 60's-70ish.

From what I've read Fountain didn't offer the 496mag in the 29, but I could be wrong. Is there anyway that the plastic piece on top could have been switched? Is the engine marked anywhere else?

Call merc with your serial number, they can give you the info on the engine.

Call merc with your serial number, they can give you the info on the engine.

Over here on this side of the ocean up north, where gas is waaaay too expensive, it is more common to see the 496/496HO's and even diesels in fountains. I would think it's more a question of asking what they can do, than what they will do.

That boat has got to be a slug, way under powered with a 496 375 hp I know sea rays that will out run it

67-68 with a Mag HO is what I have read, so 64-65 and a turd out of the hole with a MAG. If it came from the factory with that motor Fountain will have a performance report on it from when it was built