We can't post websites here-suggest using Google to search for a sump-you will get a lot hits! As for building one, I have seen a number of posts here on SWF.com about fabricating sumps so do a search on that word and check out what people have done. Going that way ultimately depends on your skill set in fabrication, tools you have on hand, and your motivation! I bought my sump from my LFS years ago and it has worked great for me.