John-
I recently tracked down Denny Denish, the author of "The Big Twin High-Performance Guide" because I wanted to learn more about the evo builds, and his three volume series on increasing hp and tq. of the evolution motor is one of the best if not the best ever written on the subject. Anyway, after telling him where I lived, in the western suburbs of Phila, PA, he told me to call a guy named Mike Magaro in Harrisburg, PA., who he said is one of the best in the business when it comes to evolution engine builds. I called Mike who turns out to be a great guy. With over 40 years experience of drag racing racing his FXR, setting record times and working on evo motors, Mike has remained current. He too, had great things to say about The Ultima motors and even runs the Ultima 127 ci in his "street FXR". Went out to see him at his shop about 90 miles away from me. His shop is immaculate! Not only did he offer to lend me his copies of Denish's books after talking with me for about an hour, but he told me to come back after I read them, so we could decide how I wanted to proceed with my build. Currently, I'm deciding between the 96" big bore/stroker build or using one of the Ultima motors with over 100 ci.