i did do a search but only came up with people trying to fit the front upper bars, i would like to know if an eg rear strut tower bar would fit an ef?

 

Where does it mount? On the shock tower?

 

Well the title does say strut tower bar....
Not sure weather or not the rear strut bar will fit perfectly but i know for sure the front bar will. I have a BYS EG Strut bar on my hatch.
You might be able to buy an ebay bar for an eg and see if it fits, since you're looking for a mugen bar seems like wasting 20-25 bucks for one won't be a problem.

 

Oh duh, I'm dumb I was thinking the c pillar