FMF MegaBomb Header, Stainless Steel. This item fits the following models. Improved bottom to mid-range power. Produce the low end of a longer header and the top end of a short header. Less susceptible to damage than a long header.Effectively reduces sound output by as much as 1.5 dB. Run well with sound-restricting mufflers. Available in stainless steel or FMF's exclusive Ti-Metal construction. We do not mark items as "gifts". If your tracking information states'Delivered', but you have not yet received your package you should. A doorstep, front porch, back porch, garage, window, etc. (A well-meaning neighbor might have taken your package inside their house for safekeeping or for protection against the weather). Wait 24 hours (in rare cases tracking may say delivered up to 24 hours prior to arrival). We understand that such delays can be very inconvenient when they occur, but we do not have any influence over such situations.