bought just in case I needed them but ended up going in a different direction on the mounting. Comes with the 4 studs, hardware, and 2 rubber mounts. $12 shipped.
DON"T DO IT!
Take some time and do some reading here about 'rubber mounting' . The engine should be mounted solidly to the frame. No rubber or resilient material should go between the engine and frame. This topic has been discussed and covered here many, many times.