Help me decide what to do??

[master_painter]

Good afternoon how's everybody doing so I have a question to ask and the other three Tahoe that I have that I bought a few months back, the original owner customized the suspension and other things and for his work he pulled a 20 ft box trailer with lawn equipment in it so he changed the gear ratio in the back so the gear ratio is not the same as a gear ratio in the front so one I can't use two I've already replaced the seal on one side for some reason and three now I got a weird noise coming out. I went and bought new seats and bearings and seals. So my question is I want to be able to use my four-wheel drive so should I change my differential combo all together or should I just pull out the whole entire rear end and go ahead and get another one and hope that I get a good one I played with the rear end before it's not a unknown playground for me but I'm just trying to figure out maybe which way I should go with it

 

[GMCChevy]

If it were mine I'd get a used rear end to put back in with the right ratio, they aren't that hard to find and shouldn't only need new seala as preventative work at most.
Unless you want to go with a whole different ratio front and back.

 

[PG01]

Good afternoon how's everybody doing so I have a question to ask and the other three Tahoe that I have that I bought a few months back, the original owner customized the suspension and other things and for his work he pulled a 20 ft box trailer with lawn equipment in it so he changed the gear ratio in the back so the gear ratio is not the same as a gear ratio in the front so one I can't use two I've already replaced the seal on one side for some reason and three now I got a weird noise coming out. I went and bought new seats and bearings and seals. So my question is I want to be able to use my four-wheel drive so should I change my differential combo all together or should I just pull out the whole entire rear end and go ahead and get another one and hope that I get a good one I played with the rear end before it's not a unknown playground for me but I'm just trying to figure out maybe which way I should go with it

If youve never set up a rear before and you want to do it im sure you can find plenty of info here or other sites but swapping out the entire rear axle would probably be easier/quicker for you. Just my opinion