I bought this unit new and installed it on a 1981 VW Sirocco and ran it for about six months until the smog laws in California changed . It has been sitting in a box ever since. Very clean unit. I had a lot of fun in that car. Found it in the back of my storage. Time to sell. Maybe has 300 miles on it. Fast little set up. Side draft Webber and 4 into 1 header bored balanced and blue printed. 210lbs compression per cylinder. California said No Smog for you. So I pulled the motor and removed the carb. Sold the motor.