Installed and ran the BB's this weekend. Went the extra mile and completely ground down both towers. Guys you should at least grind the rear tower down. This way your shocks will be straight up and down...springs will NOT rub the bodies, or the little blue cartridge caps. The shocks did NOT leak either. I did use a 1mm blue spacer with the bottom rear eyelets to keep the springs off of the tie rods too. Man they are smooth as silk !