I Honestly love stacks, however the only downsides to stacks is that you can get water down them if their not covered in heavy rain or snow.. not enough to hurt anything but enough to start rusting from the inside out.

When I do my single stack Im going to do a flapper on it, but that wont be until after I get my custom tool box in the back.

the only downside to a side turn out.. is you can put some coal in the window of a prius as you pass their slow POS on the highway...


oh and im sure the Anti-stack members will be along shortly to give you what-4. just remember its your rig, not theirs.