Originally Posted by Mr.K

My goal with the diff itself is to improve traction of course. Mostly spirited driving with some track use. The OS Giken might be better for cornering performance and handling characteristics but I am not looking to install a diff cooler at the moment. The reason I am asking about weight is the notion that the mechanical lsd could be heavier than the factory VLSD. The weight added could be a secondary effect and not a decision maker in upgrading my diff. I just wanted to know how big that difference was. I have to keep the power planted after all.