what grit sand paper should i use to get the scratchs out of my front and rear fenders, there not to bad but there defintly visable, and then what grit to use im assuming a finer grit to get it all cleaned up, but does anyone have any suggestions as to the number. yes i no that when you start sanding you loose all the gloss but is there any house hold products that can make it a lil more shiny after sanding