We all have China parts knowingly or unknowingly on our cars. However the industry in China is based on company reps verifying QC. Microsoft for instance has Microsoft reps at their Xbox plant verifying QC. Does AMS have reps verifying ingredients cast into manifolds? I doubt this considering they are the only company selling these copied manifolds besides Ebay vendors.. The AMS manifolds are cookie cutters aesthetically but internally forged with who knows what? I think there was breakdown at one point but I am not that resourceful to just pull it up.
___________________ "If everybody is thinking alike, somebody isn't thinking."