thanks for all the input guys, I had not thought about clearance on the frame. my plan is to run coil-overs too so that makes it an even bigger problem. I have been planning tub front fenders anyway so it seems like i could make them a bit wider. My main concern before was being able to find a toyota wheel that would not have to much backspacing if i ran the 80's, but if the narrower axle is going to cause suspension problems then its not an option. the fj80 axles have a large ring gear in the front as well as the back and I hope they will be cheaper than the fzj80 axles with the 8' front ring gear and e-locker. thanks again for the advice.