Let's see, a 17+ year old high performance could have a lot of issues if:
1. It wasn't maintained, stored or operated properly.
Was it run in fresh or salt water?
Is it from an area with a full or short season?
Was the driver conservative or a cowboy in the big water?
Was it stored inside dry or in the water and sun?
2. The Bravo outdrives have had two major upgrades since those drives were new. Are these drives done yet?
3. You need a good surveyor that understands high performance marine construction and can check the high stress areas for damage or repair.
Good Luck with this endeavor.