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Also, you will have to swap your rims to 8 lug if you go 3/4 or 1 ton.
If you want to stick with 6 lug, you can go 14sf and a d44. You will need to do some home work on the 14sf 6 lug, though.
When I was doing axle swap, I just wanted better gearing, so I was staying with 6 lug to avoid new wheels. I put a 12 bolt in the back since they are a little stronger...
[/ QUOTE ] Can alway use the 6 lug outer on the 3/4 ton front, and 8 to 6 lug adaptors on the rear for a 14 Bolt FF.