I would be very hesitant to suppress an M1 Garand. The gas system is tuned to a single load, and something as simple as a heavy bullet can damage the Op-rod. I imagine the backpressure from a can could do some real damage. At the very least, you'd want an adjustable gas plug, even then it would be very long, and even heavier.
Buy a .30 caliber can, and run it on your savage and your AR.