i would keep it like how it is. but with some muscle u can get the engine rlly shiny on all the alluminum pieces and the plenium. i just use meguirs mag & alluminum polish its in a blk tin can and if u apply that then just buff rlly good and do it a couple more times ur start to get a actual reflection off it and it takes some time could be a couple hours if its your first time and if you do the whole engine and then on the rubber tubes just use armor all ultra shine protectand and the whole engine will look new. just make sure to have several terry clothes expecially if its your first time polishin it they get black FAST