Andy - I briefly thought about going to a 4.56 but honestly I like the streetablitily the 4.10s afford me.
With zero tuning the new cam ran within 0.16 mph of the old cams best and that's at a difference of 2200 DA. I think it's making 20-25 more horses based on online calculators. I know these aren't exactly the gospel but it gives some direction at least.
I run 4.10's and love em even w/the baby 28's on the car now w/enuff tq to shred em at will in all gears. 56's would not help hookin issues if you have em either..........just my opinion...........1.33 60 last time out foot brakin at 2500 and never went higher because I got the boot.........
