Dumping exhaust down under the car

I've been running 3" exhaust and open mufflers at the rearend for a couple of years now and I've had about enough of it. The noise inside the vehicle and fumes aren't pleasant but unfortunately tail pipes are not a simple bend up the pipe and install (read big tires, springs relocated and 67 gas tank). I have some turn downs that I'm gonna install and point them out and down, that should help as a temporary band aid fix. I've never had anyone complain about dust getting kicked up though? Maybe because I don't have turn downs now.