I have a Liberty 5 speed and a Bruno drive in the Dart now,replaced the glide with this combo when I went all motor.
Tight gear spacing keeps the 555 ci engine in it's power range.
I shift at 9200,with 4.88 rear and M/T 3062S 29.5x10.5 tires.
My car is 3660 race weight so it's heavy,and the engine makes it's power at high rpm,close to your combo.
BTW,you will probably need the Extreme 5 speed because of the weight of the car and the potential HP the Hemi 99 will make.
Let me know if I can help(call or pm)
Steve