Swing by U-Haul and grab a 2" class 3 hitch from them. Pretty cheap actually. Around $130 if I remember right. If they want more than that, just order one from U-Haul online and get the free shipping from them.
Not sure where I got mine, but it's a Curt hitch. Pretty straight forward install, but kind of an ass pain getting those big headed bolts through the frame rail holes.
When you get to that point, instead of making the frame holes bigger, just make the heads of the bolts smaller. Much easier to do than to mess around with a step drill or a dremmel under the car. You'll see what I'm talking about when you get there. :grin: