http://davesbikeblog.blogspot.com/20...le-bit-of.html
http://davesbikeblog.squarespace.com...-steering.html
http://davesbikeblog.squarespace.com...ebar-drop.html
A few quick reads to get you up to speed on rake, trail, head angles, etc.
Be careful swapping out forks with different rake angles. You can possibly make the bike more unstable and cause it to shimmy. A high speed shimmy can cause a very nasty crash.