preping

i recently bought a used set of lip kit. i want to prep it myself before bringing it to the body shop to have it painted. appx. what grid sandpaper should i use for scuffing the old paint? also, i notice the kit was already repainted once. do i have to sand off all the second layer of paint?

im just starting on my car performance wise...and i would like to know what should i get or do...b4 getting turbo...llike parts to buy in order b4 the turbo...thanks

i bought some used type R side skirts and i want to get them painted. i know it costs more at a shop to get them prepped and painted, so im thinking i can save some money and do the prepping myself. but what does the prepping involve - is it just sanding down the paint? or is sanding and...

Is there anything I should do to the inside of my window before I get my new RsX Tinted. I assume there is some film and oils from the manufacturing process. Also is there an ideal tempature for proper window tinting. I ask because my last car was a used Prelude with a bad tint job and i...