so this is the box that my brother in law is building for me, he didnt take in the fact that the ports need to be facing the rear and as you can see there is no room for the ports to breathe if placed in the back.

what would you guys suggest as to were to place them at? top back or top front? and what size ports should I use or how many cause we have to go with the round tube ports.

back near the seats is approx 15" high and the part near end of trunk is 9"

im adding 2 rockford fosgate T2's 12" so port size and trying to figure out how to get it so its about 32hz tuned

cant figure out how to make the picture smaller so sry bout that

 

Didn't the subs come with a spec sheet that stated their air volume requirements and port dimensions? If not, I know you can call their tech support to get the info, which would be best, as they know their subs better than anyone else.

If you list the Thiele-Small parameter values and know the internal volume of that enclosure, then I can model it as required to determine the port diameter & length for you...but I'd still suggest you call RF.

 

If you're running into port length problems, changing the port diameter will affect how long the port needs to be.

2nd calling R/F and give them the inside box length limitations so they can help you w/ the correct diameter