i have a stock DSM turbo that looks okay, but i want it to look polish to match my manifold. does anyone know step by step on how to do this or knows a site that will tell you how to do it?

 

get some sandpaper. and a mask. and some polishing compound.

using different grades of sandpaper use smallerst grade first, then keep goind up on the grade. eventually finishing off with a fine sand paper. then finishing off with a polish.