So the NV5600 has a better 1-2 than the NV4500? seems this would be where you need a change most as the OD is the same?
The 1-2 is slightly better and the 3-4 is much better.
Percent ratio change for each shift:
NV4500: (Dodge version)
1-2 = 46% <-- Too big for Moonshine. I never use since I have 4.10's and 33's.
2-3 = 45% <-- not bad
3-4 = 40% <-- too big
4-5 = 25% <-- Perfect
NV5600:
1-2 = 40%
2-3 = 40%
3-4 = 32% <-- Nice!
4-5 = 28% <-- Still in the power band!
5-6 = 25% <-- Vroom!
Of course, the other issue is you're now lugging another 165 pounds of tranny so, in my case, I'm not really getting much of a bonus by bettering my ratios.