Who? Shenzhen Baokang Auto Parts Co., Ltd. - Shenzhen Baokang Auto Parts Co., Ltd. - MANIFOLD,RADIATOR This is a Hong Kong based company from Alibaba. BK-3402 N52 Billet Intake Manifold 90mm with Fuel Rail kit SET BK-3403 N54 Billet Intake Manifold 80mm with Fuel Rail kit SET BK-3404 N55 Billet Intake Manifold 80mm with Fuel Rail kit SET BK-3413 N54 Billet Intake Manifold with fuel rail kit set BK-3414 N55 Billet Intake Manifold with fuel rail kit set BK-3401 M50 M52 M54 Billet Intake Manifold 90mm with Fuel Rail kit and Throttle Body se BK-3405 S54 Billet Intake Manifold with fuel rail kit SET It is also important to note, that all of the manifolds except the S54 will use an M54 injector port design, Siemens Part#1427240 All of the manifolds have the option for stacks which cost an additional $20. Here are photos with and without stacks: Shipping for 20 units will be $65 each, however this certainly to a single location. There would be additional shipping charges from the domestic address to your physical address. If you want to just order it yourself, directly to you, then it is $145 in freight. The logistics can be determined such as who will be paying, where they will be shipping, once we see if there is a legitimate level of interest. A minimum of 20 orders must be placed to reduce freight from $145 to $65+domestic delivery. The savings will depend on your location. The seller accepts Paypal(+4.5%) or Bank wires. Lead time is 2-3 weeks for fabrication. If you're interested, post below and we'll see if a legit group buy is worth looking into.