Lee Gillenwater

I had a quick question about a Century matte box for the canon xl1s. I have been looking at some and I am very interested in buying one. I was wondering would it be better to purchase the entire kit, or purchase peice by peice and fugure out what I needed. I have the 72 mm lens.. could I just get the rods andmatte support, or would the entire kit be a better idea. If someone has any ideas on this, let me now... Thanks! Lee Gillenwater