There's a big difference between having a common manufacturer parts and sell them to different companies for personal branding and sale and having a small shop spend time and money researching and developing a product, shipping it to a manufacturer to be produced, selling it exclusively as their own (Hey they did R&D it), and having AMS blatantly copy and sell it for cheaper.
For those of you who can't tell it's the whole R&D part that's different. Specialty Z had a high capacity oil pan using baffles and trap doors for those who tracked their cars, but it never came out. Why? I don't know specifically but if I had to guess I'd assume they just didn't want to spend time and money to R&D a part that would immediately be copied and undercut. The Selin designs dual intake kit would be my bet as to the next product to be AMS'd...
