[bbcmudtruck]

It can be hooked up to either side of the motor. So seeing one on the passenger side is completely normal. Its just the way the p/o put the motor together. I like to run my pcb exactly like the one pictured. Its the cleanest/most direct way to run it in my opinion. As far as your idle goes, just adjust it so that your not lunging forward when you let off the brakes. It may want to creep forward, but as long as it doesn't want to take off and drive, you'll be fine. A very good and cheap investment would be a vacuum gauge. You can tune your carb and your timing with just a vacuum gauge. Easy to use and you will use it more than you'd think! There has to be at least a dozen things you can do with a vacuum gauge to help you with your motor.