Here are the Racecraft front lower control arms, rear lower control arms, antiroll bar, and manual brake conversion plate. The front lower control arms are made from 4130 chrome-moly, like the K-member. Likewise, the rear lower control arms are also 4130 chrome-moly, and are double-adjustable. Racecraft's antiroll bar uses bolt-in end plates and spherical bearings to eliminate binding and premature wear. The manual-brake conversion plate is also available with a master cylinder, which Tim has as well.