I wouldn't do anything to it. It's at 4.7 down and that will likely work fine on the street and be better for any track runs. IMO, 2.7 is not enough with SS if you plan on doing any track stuff.
Do you think this will cause any u-joint issues because like this it gives me (I think) a u joint working angle of 8.1 degrees (driveshaft angle plus pinion angle) or am I wrong? Thanks