the wammy goes in. A wammy may just pop right in or you may have to screw it. A wammy is very inexpensive and are easy to install (they are made to go in in out quikly in case you are playing something and the wammy is in the way. Go to your local music store and ask them about it.
BUY A TUNER!!! your guitar goes out of tune quik when you have a wammy bar!!!!!
Max McDougall