I've been looking at the 13" kits from mustang tuning and steeda and I was wondering which cobra's do these kits come from (at least the calipers anyway)? Or are all the cobras the same including the 03/04 models? It seems like mustang tuning will be the cheapest considering the free shipping and stangnet discount. Is there anything else I need besides the rotors, calipers, pads, brackets, and ss lines? I don't know if banjo bolts or anything like that need to be replaced. Just looking for info...