Well, so far I haven't gotten any competitors springs to test yet. I really want to do this to show everyone the difference between them, and to ensure we ae not going to just make a kit just like someone else's. I am currently running some very close to stock dimension(but higher rate) off the shelf parts, to judge the overall feel of what they are going to do, but they are not "exact" fit and I know that not everyone would want to use them. I have put about 250 miles on what I am running now, with no excess noise or problems. Once the springs are installed, they fit well. If someone is interested, I can tell you what front springs will give you a 250# rate, with about a 1.2" drop for the front. The only thing is that they are a "constant" diameter all the way up and down, and both ends are gound flat(like a coilover). They do not rub or bow, and once installed fit just fine in the stock struts.