I think im going to go with stacks on my 95 psd f350 and i was wanting to know a little bit about them like where to get them at a decent price like a website or something because I have been unsuccessful at finding them and if installation is difficult like drilling holes in the bed and what not and what kind of power gains would i see after installing some stacks thanks

 

You likely won't see any power gains as a result of adding stacks. Look cool, yes. Sound cool, yes. Power gains, no. I know a handful of guys that have done it, and none of them have had too much trouble with drilling the necessary holes in the bed. You can get the components from a number of big rig exhaust shops, but one that's online is Airflow.