Will a higher spring rate say...14f/12r prevent the uca from hitting the body frame?

Im on Megan coils now and I believe they're 10/8, full stiff but I keep getting that loud bang over certain road conditions.

Cutting that hole and putting more stress on the lbj's is my last option.

 

Depending on how low you are you will still hit. Only way is to cut the hole

 

If ur slammed, you must cut a hole

 

uca banging is a given when your ride's slammed. either you lift it back up or cut that hole. its a something u gotta sacrifice. im on stance coils with 14k up fronts and with the settings i have it still bangs. =)