Passenger muffler can level out, driver's can go as high as passenger. Keep in mind, it's literally just a straight piece of 4ft pipe on either side (technically I guess 3' 7" now) and any higher than the passenger it hits the floor. I imagine a kit would fit better. Was gonna get a Pypes kit, but I was only gonna use the tail pipes anyway. Dont want an X pipe, and after reading other members posts about them, not so sure. TA Performance makes a kit, but I've never seen it. Probably has monte SS tail pipes. Which I also didn't want. I can go over pretty decent dips and they don't scrape, but if the pipes were angled in the middle a bit I suppose the rest would be moved up in turn.
My 2 regals were lowered, but the muffler bottoms were still above the bottom of the rear axle:
"straight pipe" is non ideal. For best results the pipes need to go in to run along the driveshaft then out to the mufflers. A Muffler shop can likely fix your problem for cheap by turning up the pipes before the mufflers. I don't have pictures of the 3" in my 2+2 but even with properly bent pipes I spent 2 days to get the last Inch in height. A muffler shop probably could have done it for $50-$75.
Not Scraping and not looking like Joe Dirt are two separate issues. People talk about you behind your back when they see exhaust hanging down like that and we don't want that. Think of this as an intervention.