Sounds like you visited Peter Hurst... I've/we've been contemplating a similar plan and I agree with previous posts, a Sedan Bridge would be a better purchase as you would feel more comfortable with the above waterline roominess.
Good luck.
The 40DA can be found after you select "DESIGN YOUR NEXT SEA RAY" then once you chose your options you can't get to the electronics options unless you fill in your pers details. This is the page in question and should be deleted soon.
I'm also on a Mac
There's rumors about a whole new re-numbering of the Sundancer line-up for 2010, not too sure what happened to the 40, probably gone the way of the 44???