CumminsPower98, they look sweet!!
How are you guys/gals attaching the stacks to the bed? Or, if you aren't attaching them to the bed... what are you attaching them to?
How much oversize on the hole in the bed are you using?... . example: 4" stack = 4. 5" hole, etc.....
I think I like the idea of a stack or two... ... but I need to find out the cold hard facts from someone who knows Mass. emission laws.....
Matt