Well I am going to do both. It is just going to take time. Gears and rebuild kits and and eaton e locker are $1600. I am going to replace the g80. Motor I can get for about $300. And cam is $400. I was wanting the cam basically just for the sound. I want the lope. I am going to go with the 4.56's
Jared's Galaxy S4
It does not end there. Those prices are just the beginning.
Once you do the cam, and every part plus labor that goes along with that, you now have to compensate for the loss in bottom end, and what this means to your transmission. The 3000 rpm stall converter and the programming will be next.
Make sure you know what you are in for.
With big tires, do the gears as mentioned. A transmission with the proper stall converter and Blackbear tuning for both to accompany this will be so effective, you might forget about the lope you want so bad.