Yeah I'm thinking of making my own as well. It's alot cheaper and alot of the stuff can be bought at a hardware store. Danner Mag 3 pump can be had at your local pet store for alot less than Enheim pumps and they perform ALOT better. Reservoir can be home made. Clamps can be bought cheap at home depot. Chevy Chevette, Caprice, or Cavalier heater core (1977-87 I think) can be bought at a autoparts store for less than half of what u would pay for a good Blackice Xtreme. Tubing u can get anywhere. The only things I see that may cost u a bundle is the water blocks themselves unless u are skilled enough to make them on your own. I have done alot of research and I've come to the conclusion that *most* kits are overpriced and their performance can be beaten by a well configured custom kit.