Rear ride height

Shock don't set ride height, springs do. So the only way to raise it properly is to change the springs or add length to the shackles.

The only proper way to raise it is to change the springs. Lengthening the shackles does little to raise the car, and will cause more geometry problems than it's worth.

Are the new shocks long enough? If the shocks were the only thing changed, the ride height shouldn't be different.