It has been awhile, but after getting advice on several forums, my 06 FLHTCUSE (103CI) is now a 107CI motor.
NRHS build - went with the following:

NRHS Stage 2 CNC ported TC 88 heads (1.90 intake and 1.615 exhaust) set to 87cc to achieve 10.2:1 compression (swapped out my 103 heads)
Andrews Hydraulic Cam Conversion Kit with Andrews 54N cams
Bored Cylinders to 3.938 and installed CP 107FT forged pistons
Changed out injectors to SE 4.90 gms/sec
SE High Flow Air Cleaner and Rinehart True Duals with Performance Baffles
Dyno Tuned

I am pleased with 104 HP and 112 TQ, although a change to "quiet baffles" on my Rinehart TD's or a D&D Fatcat 2into1 would shift the torque curve left and provide over 100 ft/lbs of torque at 2200-2400 rpm.
I need to ride it for awhile and see if an exhaust change or baffle change and a retune is something I feel would be an improvement worth the money. Any Feedback would be appreciated.

Tom

 

OK here is the same basic build but I have the smaller valves AND a D&D Boss 2 in 1 exhaust. I think the exhaust plays a big part in the differences.

 

John,

I agree, torque at 100 ft/lbs at about 2250 rpm, was told my build should get there with switch to 2into1. (Fatcat w/quiet baffle) Thanks for the post, it really illustrates the torque shift to the left and the wider area under the curve with that exhaust, I appreciate it!

Tom