I've had both, I like the HD parts, the suspension, and the wheel.
The suspension is firmer but it is not overly harsh, in fact, it seems much more composed over bumps and road irreguarities than non PP.
I detuned the Big Girl, drove a while till the trims normalized then got into the new one
Didn't detect any difference in quickness but there is a lot more torque steer, especially on WOT downshifts...
I actually think power is limited in first stock due to the tendency to spin, gonna turn it all off today and see how she behaves. Don't see more than 8 or 9 lbs of boost in 1st gear. 12-14 if allowed to get into higher gears.
Stock for stock power wise Torque says the new car has about 10 more HP and that should get better as the motor breaks in.