box design for 18 fi bl

[Terrye05 0]

hey i have a question for anybody who can answer, i am installing a 18 fi bl in my 01 sonoma my intent is a daily driver with occational spl comps. My box is 48 wide by 24 tall by 13 deep that comes out to about 6.9 cu feet i believe but i dont know how to figure my port size ? Needin some help

[exxd 1]

hey i have a question for anybody who can answer, i am installing a 18 fi bl in my 01 sonoma my intent is a daily driver with occational spl comps. My box is 48 wide by 24 tall by 13 deep that comes out to about 6.9 cu feet i believe but i dont know how to figure my port size ? Needin some help

what do you want it tuned to?