I just bought a limited slip differential from a montero for the back and the front differential from the same montero to match the gearing. I was told I need to match gearing in both front and back to make this work. It's my understanding that my gearing is 4.22 right now and the montero is something like 4.6. I'm wondering what will be required of me to swap both differentials and if anyone has performed this before. Any help is appreciated.