Mandrel-bent from 7/8"-OD, 4130 tubing, this loop features a narrower size: 6" wide (for greater seat clearance) by 11" tall. Designed to meet NHRA requirements, it fits 3"-diameter driveshafts. Use this loop as a second driveshaft loop forward of the main crossmember that mounts the forward end of your ladder bars or 4-link. It is installed in the x-bracing of the floor and within 6" of the driveshaft front U-joint.