Do you know if the 10% stiffer springs from the G80 Sport will fit on a 2015 Genesis 5.0 ultimate?Yes, I did say that. The G80 sport AWD came with adaptive control suspension, no reason to butcher it with lowering springs, I prefer ride quality over look. Since G80's springs are ~10% stiffer, the ride if just fine, reminds me of my e39 540i/6 sport package.
That is why I love the new 3.3 twin turbo engine!!! A tune bring HP numbers to about the same as the 5.0 V8 and adds over 100 ft/lb of torque. That is insane!!! Plus, even in stock form the turbo engine's torque is much lower in the rpm band than the 5.0 V8 which give it the same 0-60 with less HP and with the same amount of torque as the V8. Very nice.