More g-Bar questions

[PSV]

CA Chassisworks has a new ad in the May Chevy High Performance with the g-bar for the camaro and Chevy II. They show 3 lower link styles: Poly bushing lower bar, Pivot Ball lower link, and Billet Pivot Ball Lower link. Is there an advantage to one vs the other? Is it just a cosmetic upgrade to use the billet? They also indicate that they are making Direct fit Fab-9 housings. How dose the fab-9 compare with the moser 9in for the g-bar?