Our 9-sp Speedster shipped with Ultegra ST6503s, FD6503, & XTR RD. I'd think that XTR should still be relatively available, and I'd think that any Shimano triple FD should work, though I'd agree with PMK that the FD6503 should be the first pick.
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Jeff
Learn from other people's mistakes. You won't live long enough to make them all yourself.
2004 Co-Motion Speedster
2010 (Specialized) Carmel comfort (my neighborhood bike)
2008 Raleigh comfort (wife's neighborhood bike)