My current 2:
and some previous maple boarded SB-2s:
another Tribby with maple board that I wouldn't mind having back:
sunburst/maple is the most common maple-boarded SB-2 I've come across (I've had 2 with that combo):
Taking a look at my history my personal score is about 3-to-1 rosewood-to-maple on SB-2s (includes US & Trib but excludes the fretlesses that were ebony).
Music-Go-Round has an SB-2 wearing a maple JB-2 neck that I've been tempted by (
http://www.musicgoround.com/gear/inv....asp?id=684995) but they want $650 for it which is a bit steep for a parts-bass IMO.
On Gbase there's a cool red one with maple board and matching headstock:
http://www.gbase.com/Stores/Gear/Gea...x?Item=1935318
GuitarAdoptions is showing a couple of sold ones with maple boards.
In general SB-2s aren't as popular as L2Ks so most places don't seem to stock too many. But your favorite G&L dealer can get you one in whatever combination of body wood, finish, fretboard and optional features you want.