I think a turbo was put on a savage that worked. The way he got around the pulses was by having a large diameter pipe that went between the exhaust port on the head and the turbo. It would reduce the pulses and act as a exhaust pressure reserve to run the turbo. It was a very unique set up with the pipe running all the way around the cylinder before getting to the carb. The tried and true mods for horse power, carbs, cams, compression and flow are the way to go with the big single.