Congrats on the new purchase.
Don't mean to rain on your parade however - but checking the condition of the core and transom should be your first priority. Just because the boat was kept in a garage doesn't mean everything is dry. There's a guy named Jeff here (Sonik) who bought what was thought to be a mint condition garage-stored Viper. Turned out his core was in really bad shape. Hydrostream was pumping out boats as fast as they could build them, and quality suffered because of this.
http://www.hydrostreamforums.com/viewtopic.php?f=14&t=1876
Pics of his core on page 2.
Once you're either A: certain the core and transom are healthy; or B: you've replaced it; then you should worry about steering.
Easiest way to check your core would be to get in under the splashwell, and use a 2" hole saw to cut the fiberglass skin over the core in the bilge area (where you'd pull the plug to drain water if any got in there.) The glass is only about 2-3mm (1/8th") thick. Just cut off the skin and check the core. Most likely its 1/2" balsa, so don't cut too deep. If it's good and dry, then all you need is a fiberglass repair kit from your local shop and it's easy to re-patch. If you find wet balsa, then prepare yourself.
Welcome to the forum, and please keep us updated.
