Next up was the nasty task of removing all the factory undercoating. Last time I used a propane torch and a 2.0" wide paint scraper but I figured that there had to be a better way. I saw one guy online talking about using a needle scaler so I bought a cheap needle scaler off eBay to give it a shot. It worked like a champ. It took me about 5 hours to strip all the undercoating that was left. I didn't even have to drop burning hot rubber down my sleeve or get it on my face. You will still want to wear a respirator because the dirt and rubber really flies and hangs in the air. Here's the box mine came in:
Where the paint was thin, the needle scaler just took it off completely and left a pretty nice surface: