box port

[988216855]

i'm planning on building a box for two 12" the biggest box i can fit in my car is 32w 13.5h 26d. i'm not sure of the port though. i want to tune it to 31-32 hertz. does this look right? the port width is 4.7.

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

or any other suggestions on the port?

[n8ball2013]

use a different port calculator. Torres on here has a banging one.