Dash Bar instructions:

Start by dry fitting the dash bar.  It is meant to fit over the plastic but it is a tight fit, so be carful about scratching plastic. 

Use a small drill bit to start a pilot hole and mark the steel pillars.

Remove the plastic and make sure holes are centered on pillars.  

Open up all holes and install 5/16-18 riv-nuts.  (There are videos available on you tube that can show you how to make a tool if you don't have one).  It will make install easier if you oversize the holes in the plastic.  

Reinstall the plastic and now your Dash-Bar is ready to bolt in.