Certainly has a cool factor to it. True everything needs to be lined up properly to track right, but it does have the flange on the smaller pulley to keep the belt from walking. Price is right. If it's what you want, do it. Build your car for you, and have a ball. These belts run best when all the free play is eliminated, without being pulled overly tight. They just don't need it, the drive relies on the tooth and cog to drive everything and not friction, like a v belt or serpentine requires. I used the same style system to drive the prop on a homebuilt airplane, constant load at 4000 RPM at cruise speed, for hours at a time. Worked great.