To Mr. Bell who mentioned the Jacobs ignitions; I have had jacobs on two Mopar product - first on my beloved "but now passed" 1977 Dodge 1-ton pickup with 360 and 727, a real workhorse she was, and then on a 1973 D700 Dodge five-ton dump truck with a 413 industrial engine and 2-bbl carb. The pickup was a great old truck, pulled everything I ever hitched her to without complaint, comfortable, fast, beautiful, etc. her only sticky point was her insistance on GOOD fuel - I mean the most expensive high octane stuff she could get. I had been running her on octane boosters etc until I finally put in the Jacobs ignition kit. After Jacobs installation, she ran better than ever, better (smoother) acceleration, more power across the whole curve, easier starting, and ZERO ping when pulling hills - all on midrange fuels. With this conquest, I then installed jacobs in the dump truck, which was a gas hog by necessity and never did run true - and yes, she did have a brand-new MOPAR performance distributor kit installed and set up correctly. This truck went from about 5 MPG to 8 MPG, much easier starting, and a much improved idle - very important when backing slowly into a tight spot with a big truck. I'm sure there are situations where the improvements would not be nearly so noticeable, but I'v been pleased across the board with Jacobs products, and the installation was simplistic on the two vehicles described - did not need the tech line except to determine which model to order. Just my humble observations, Kate Justet Triplett Kate's Custom Gunleather Monroe, Washington Proud mother of a soldier and owner of "Lucille" 1968 Crown 4 door HT