Just my two cents. I am not going to remark anymore on the money/business portion of this deal because,honestly,it's none of my business. I will say that any manifold that has been modified should be advertised as such.But,those pieces of metal MAY have proven to be very beneficial to the operating of that manifold. I am not a big fan of screws inside an intake either. Are those pieces of metal aluminum? If so,instead of paying a welder to fill those holes,i would consider having those pieces welded in place permanently. Just a thought. Good luck.