We call this The Blox "PURPLE POWER STACK". This Blox velocity stack features a 3 inch diameter neck, so it can be used with a variety of intake systems. It's one-piece aluminum construction and purple anodized finish, give this an outstanding look. As a visual asthetic piece, the velocity stack can be affixed right off the turbo or attached at the end of the intake pipe on race day. The Blox velocity stack is also designed with a flow-contoured entry that will help assist in improving air induction and efficiency by making a smooth entry for air and adding velocity.
As a suggestion, don't forget that the Blox velocity stacks work wonders with the Blox Racing Velocity Stack Air Filter. Combine the both of these with a factory OEM Type-R intake tube, and you have one potent intake system.