if you think you can do better than by all means contact steve and see if he will let you borrow his waterblocks
if you present him with a good plan and are nice and offer to pay the shipping he might let you borrow them for your testing
my rig pics:
www.jerom.com/romie/case if you wanna see em (the inside components are different now but the case and watercooling is the same. it's not the best set-up in the world (it predates spiral blocks) but it works for cooling my p4 more than well enough