I was wondering what size fuel tank do I have in my boat??? and also what kind of fuel consumption I can expect??? thanks

I do not know what your capacity is, but would guess around 40 gal.

Expect to burn around 14 gal/hour at 3000rpm cruise.

Those are both guesses, though.

Iggy should be able to tell you. Shoot him an email.

45 gallons.
Open the engine cover and look down at the top of the fuel tank, it's just in front of the engine. You should see the manufacturers ID tag and it will state the capacity.
That's how I found what mine holds. I also believe the owners manual will tell you how much too. If you received it with the purchase.