The MA motorsports knuckles are just normal knuckles with the the steering arm part cut shorter. This will give you extra lock and faster steering but you'll still have the poor alignement of a standard lowered car. Roll center will be bad because the lower arm is already angled too far up before the suspension even starts compressing. You also get bad bump steer and other issues that make for poor handling. The Driftworks ones give you a new hub that is designed so the suspension arms and steering arm pickup are in the perfect place for a lowered car to eliminate all these problems.