Dragging SFC's??

OK with my Sportline springs, I can sometimes drag the front bumper on some driveways and a muffler on some speed bumps. So will I be scraping the subframe connectors when I get those on in a couple weeks? A lttle drag is OK but I dont want to get high centered in some parking lot on a monster speed bump.
 
I think I need to crawl back underneath it. I didnt have this problem before I swapped in th O/R H pipe. I think I let the muffler hang down a little while tightening everything. Also are SFC's strong enough to jack car up? Im looking at the Steeda full lengths with torque box plates.