Lot more than 6-8 low low cars that post. Just a lot of site to look for for them.
IMO, 2" isn't low or can even be considered low. That's the height the cars should have been stock.
But now if we're talking distance from ground to bumper/rocker, then 2" is a good number for a street car.
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.