i'm talking about the plastic factory one. i ordered my 6" miter stacks yesterday and i've got the factory plastic bedliner and i'd like to keep it. has anyone done the same. wondering how'd it work. what ya'll think

 

If you want to keep it just cut your hole through it and run em like normal. I don't think they'd get hot enough to cause you any problems.

 

I also chose to keep my factory plastic drop in bed liner when I installed my stacks. I have been running them for 20,000+ miles with out any issues. I just cut a hole for my Y-pipe to go thrugh the bed and bed liner and thats it.

 

awesome, that's what i was wondering. thanks guys!