I have same vessel, just a couple years earlier (95) but are same hull and engine.
I run the OEM prop, part# 48-78116-c1-15
This is actually a 15 1/2" x 15 pitch (travels 15" in one revolution)
This is the recommended prop for your boats max rpm's.
A good link to props is http://www.go2marine.com/go2_structure/ ... ersd.shtml
Lots of cross reference and technical info there.
A stainless would perform better. I have a good friend that owns a prop shop and plan to borrow some various models (3/4 blade) for demo. I'll let you know what I find that works.
My next big money dump is for trim tabs. Better than a prop change for performance boost.