I can't remember the name of the sign shop but it's on the south side of Brainerd Rd-right around Mc Brien All choices of fonts and colors. It was 3yrs ago but it it was less than 20 bucks and I got a spare set. It's in a small strip mall.
I've used these folks about 4 different times. Their work has always come out well. They are in Waynesboro, TN so its a pretty quick turn around, usually just a couple days: http://www.signspecialist.com/lettering/boatnumbers.html
eric i have a guy that does about any style on numbers and letters at a good price he done my name in the same style lettering as the bullet on my boat wite the chrome lettering