I knew Ridetech changed their 4-link set up, but I didn't realize how extensive the changes were. Wow. Here's a photo of the previous version we installed on my son's '79 Y84 project...nothing attaches to the frame rails. We're still a couple months away from first start up. I can't wait to see how this bolt-on system compares to the weld in DSE system I used on my '70 Formula. If it's anywhere close, we'll be thrilled.