Anyone look at an XJ cherokee rear end for a BBP conversion?

back in the day I ran continental 255/50R17's on my 5th ave, looks like those are discontinued now. the 205/70R14's on the front are 25.25" tall and they are pretty tight to the leading edge of the front fender when turning. especially if I go with an XJ 8.25" rear to get the BBP out back, I'll want a taller tire, something 27-28" since I'll be going from my current 3.23 to a 3.55, unless I can find a 3.07 out of a manual jeep.