Help building my box

P. rick Silver Member Username: Surferdude9371 Im BTL Bumpin Post Number: 579 Registered: Mar-07	Posted on Wednesday, February 06, 2008 - 18:06 GMT on this site http://www.carstereo.com/help/Articles.cfm?id=31 when it says click if its a slot or square port how do i know which to click theres a big diff in lenth between the 2 my port is 6.5x20.5 also would you use the blue or red opening for the port in an ext cab ranger? sub is facing forward.
Thieves Gold Member Username: Jtown Team Revolution, Texas Post Number: 1969 Registered: Mar-07	Posted on Wednesday, February 06, 2008 - 18:32 GMT stop making several posts about the same thing