what is that like $95-120 dollars Id get the header for shure and the silencer if you can polish/re-chrome it and turn it for a profit if your unhappy with the power deliverly.
my best guess would be that the header is a Dynoport and the silencer resembles that of a Duncan racing pipe with the nozle silencer version or the rest of the dynoport pipe both by the way are med/high pipe set ups