car is going 6s with 255 and a sound system in a heavy ass box, there will be passengers in the back from time to time...what suggestions to get the back up a lil because of pot holes and tires rubbin against quarter, are there airshocks for these cars? or do we have to use twist-in knuckles, the regular size knucles are too big, we've not yet tried the smaller size but will prefer airshocks if available

naw they don't go with some hd bilstein Shocks, and a couple of knuckles, the shocks will react quicker when going over bumps and dips so the car wont come down so far, they will help the weight issue some, but you will need to main use knuckles for a lil extra boost but you won't need many in there