I think a 9" is no comparison to a 8.8...and I will garauntee you will not pay $400 for a 9" unless it already is built up...yes early beroncos are prolly your closest but they are like 58" wide...that is what I used in my YJ and it was fine...I wish it was just a little wider but it worked...spacers would have fixed my problem...be sure to get a big bearing and 31 spline if possible...IMO the spline count isn;t as important as the big bearing...check out the other thread about Ford 9"...bobdog just posted some useful info...