Can't see the photos as I am at work, but I believe you copied the design, and there isn't anything wrong with that if you are using better material than what the ebay store is selling. I the know for a fact the cost of material would be up there, and your time putting it all together. I wouldn't buy a system from ebay, or anything from ebay for that matter....I will take a look at what you are doing when I get home from work, as I am going to delete the resonators on both cars during my LSD install...would be nice to just to bolt something up, but, keep in mind, I have the same access to materials and can weld...so, may not be the best cost wise for me...but we shall see...