is a 255/70-15 too tall of tire fore a 2.56 rear?

[knightowl73]

im running a 350 trans, non-lockup and was wondering was it too much tire. i dig the look, but want a fatter tire, not necessarily too small that it looks funny tho. i dont plan on dropping the truck any more at all, but i think a 295/50 would be too small. plus it would actually be a bit smaller than my 225/70-15 fronts. a 275/60 looks like my only choice, but would it be too tall still in your opinion? its only a tad bit smaller. id like something around the same height as my fronts that still looks wide. could i get in the 3.23 range or so with a decent looking tire size change? just wondering, tires are all pretty new now, but looking for a different look for the rear.