RE: Test stand
Here's my Frankenstein. Built it from sticks of 2x4s I scoured from job sites around my house. I test everything from glow engines with tuned pipes to big gasser twins on this thing. Not having to worry about making it pretty - strictly function only - means typical setup time for a new engine configuration is around 15-20mins.
Have more pictures of various engine setup on this same saw horse at home.