She is not the only one ever built as I have seen 2 or 3 side by side (theres a blue one and white one out there too). The website I had no longer works and I remember the mold on e-bay almost a year ago. I remember one on e-bay with what can best be described as an accident waiting to happen under the hatch - tupperware radio box with ridiculous setup and no failsafe or other consideration (I have the pics..... somewhere). Your boat looks decent from the outside so hope it was made with a little more attention to detail. The other thought - that boat is a hydro - is it going to fly like a hydro should running a jet? I guess there are full scale jet powered hydros so perhaps it will work.
For servos - there are standard servos with plenty of punch without going all industrial. Over 1500 oz/in from this servo for $160 (assembled)
http://www.servocity.com/html/spg785...tom_mount.html and almost
4500 oz/in for $230 from this servo -
http://www.servocity.com/html/spg795..._rotation.html (other ratios available). These being standard servos will be plug and play with standard receivers and batteries.