front sway bar suggestions

I am thinking about putting a sway bar on the front of my sons 73 Dart Sport. In reading the Mopar Performance book, it says that if you put it on the front, you should put one on the rear. also says to match the two. what are your thoughts on this. I was looking at the 3/4" bars either from Addco or Hellwig. He has a 360 in it. I personally don't think he needs it but it is his money. thanks in advance for your thoughts,Bill