I found out right off the bat that Automod Racing was trustworthy. I had left a roll of about $500 in my car and one of their mechanics found it and returned it to me right away. I knew right away that I could trust them. When you take your car in to have something done, you want to know in your mind that they'll do what you want them to do. Other places might charge for eight plugs, only replace four, and then charge you again. I feel comfortable with them. I had the car tuned up, the carburetor rebuilt and my gas lines redone. Then after testing out their work, had them replace the transmission which was leaking. They got right on that and they took care of it right away. It was well worth the price!