The Taipan F16 has a 2.5 Meter Beam and a self tacking jib. Otherwise it is the same boat. There are several 4.9's in the bay area and it's a great boat. You can sail it solo cat-rigged with spin or sloop rigged with or without crew and with or without spin. It's very competetive in almost any configuration. We often see the 4.9 Unis beating out the Nacra 6.0's in straight time (both with spins). Check out Tampabay Catsailors Race Results to see some of the race results from down here. The biggest enemy of the 4.9 is a big chop - small hulls don't like big waves

The 2005 Australian Nationals had both Sloop-rigged and Cat-rigged classes, as well as an F18/Taipan 5.7 class. You can see the race results here:
Taipan High Performance website
The US Nationals only have had 2-up classes because of the still small number of Taipans in the US. If there are enough Uni sailors to race I'm sure they will run them.

Lance
Safety Harbor, FL