Is it an issue when lowering the car with the DT-S? Someone mentioned the ARK exhaust not being lowering friendly. I was thinking maybe the GRIP would have ground clearance issues, but I am planning to order the DT-S.

Ark is lowered friendly-ish.

The exhaust pipe that goes under the subframe is low, but its also moves up with the wheels. So, for example if you drive over a speed bump, even though the exhaust is only a few inches off the ground, when the tires hit the bump, the exhaust goes up with the frame of the car and it wont scrape.

I have the ark grip, and I've scraped maybe twice, on that exhaust part by the subframe/diff. Both times were going angled from the street to dirt. I'm lowered about 1.25-1.5.