I have two points, but I hear that three points offer more stiffening, and are better insurance if you are to relocate the torque arm off the transmission to the floor plan area. As for the difference of the bolt on vs weld on, weld ons become part of the car. I purchased bolt ons just because I replaced my rear suspension components, and since I was replacing my rear LCA's, it was easier for me to install the SFC's myself, and have them welded later. Disadvantage to bolt on, they're not quite part of the car, it's smart to keep checking if they're tight, and I've heard they may stretch the bolt holes for the rear LCA's. Hope this helps.