I found some specs for the 1500 classic FI at motorcyclistonline.com
Measured HP 54.6 @ 5000 RPMs
Measured torque 73.6 @ 2500 RPMS
These were measurements made on a Dyno so that is the HP and Torque at the rear wheel where it counts.
Don't expect the 1600 to be any better because they may have different cams to meet ever stricter emissions.
2010 Vulcan Voyager 1700 ABS, 2007 Vulcan Mean Streak 1600
2012 Concours 1400, 2011 Versys 650, 2012 KLX250S
see my garage for list of accessories