Hi, I been looking for used smart parts freak kits autocoxker thread, as new gog freak kits too expensive as i buying for two. Anyways i came across a SWIFT BARREL KIT , I know. They from China , but can,t find any reviews. Has any body had any experience of this kit? And are bore sizes 685,689,693&696 suitable for most site paints? If you can help, thank you very much.