We are almost finished with the final version. Expect app 2-3 weeks to ship release. One of the least expensive mods with the most dramatic results. $150 plus a refundable $200 core charge when your stock unit arrives back in good condition. This is the same principal used the past 12 years on all the VMax posting designs utilizing a textured pattern to enhance flow and velocity. Average gains are 10-12 RWHP and TQ, and much improved off idle throttle response. Many have noticed this slight lag when hitting the throttle, and this either greatly reduces or eliminates this "dead spot". Anyone wanting more science on this, ask. WOn't overload everyone with the technical details to begin.....just a great mod for little $ and no tune needed, but of course a good custom tune will further optimize the results.