We have learned a lot since doing the first Alligators in 1976 (14 different versions in addition to 36 of the Honda-powered Singles sold to customers). I still love Singles but the latest target is a parallel-Twin built from scratch at AAR. We have begun this project, so stay tuned. It will be exciting just like the Brough Superior was back in the 1920s.
We have done a lot of Twins over the years, all Harley-Davidson architecture and S&S components, but also with many of our own parts and cylinder heads.
The Twins so far:
1) Standard Harley-Davidson Dyna: H-D chassis modified a lot, with a 126-inch, 148-rear-wheel-horsepower engine.