PC Grow Box Guide

Hey everyone, im really interested in pc grow boxes, however most seem to be on the expensive side. I have seen plenty of home built PC boxes and i was wondering if anyone had a good guide with a list of parts needed.
Also if anyone has any experience with them feel free to show your set up and the yield you were able to get. Is it possible to fit two seerate lowryders inside one PC Tower?

Comments are appreciated

keep lookin at the searches. a buch of ppl did a pc grow contest a couple years back might get some ideas there, waste of time if ya ask me though i wouldnt go no smaller than 2x2x3 and no bigger than 12x12