Will it be alright to crimp off my rear brakes and just use the front ones?

Depending on your tire size you can put Dana 44's in from a rubicon. Probably have better answers if you go to a jeep specific site.

I think the biggest issue would be the ultimate tire size. I have the dana 35/30, ARB's front and rear, 4.56 gears, and a full floater chromally on the rear. Even with this set up though, I wouldn't exceed 33" tires, I currently run 32".

Even a Dana 44, I wouldn't go bigger than 35". I've seen guys run as big as 35"-37" tires with the 30/35 without problems, but, to me, this just a matter of time before they actually break something. I actually have a jeep build-up book that recommends certain axels from certain truck model years (if I remember correctly), i'll dig it up when I get home and try to get back to you with more helpful info.

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