I posted the links I've accumulated on another list, but I thought they might be of some use to people here too:
Here's what I've got:
Their “Flow Quik” sounds interesting.
http://victorylibrary.com/tech/tech.htm http://victorylibrary.com/mopar/bench.htm
That site used to have some DIY bench info but I don't see it now, so you should look around
http://www.performancetrends.com/ez_flow_system.htm
http://www.tonydrews.com/Flowbench/FlowBench.htm
http://www.ag.auburn.edu/users/gparmer/articles/flowbench2/
http://tractorsport.com/flow.htm http://www.tractorsport.com/wwwboard.html
http://www.ducatimeccanica.com/flow_bench_data.html
http://reincarnation-automotive.com/flow-bench-pics.html