I would not advise anyone to use that jack. First the prongs are flimsy, making it very easy to break. Second the jack does not extend from the hole left by the removed wire far enough to have the fastener securely attached. Here is the one I used after putzing around with the Radio Shack type and learning that they were a mistake.
Since installing it (which was very easy, compared to the radio shack type) I've had no issues. It's very sturdy and will make your life a lot easier.