Sub Enclosure

[PokerBlakeB]

I have two 15" kicker 08L7s im putting in my 2002 grand prix gt. I prefer the box to be low tuned for deep bass and still sound good. The max height would be 16 to 17 inches. Length could be 39 to 40 inches and depth could be 22 to 24. Im not sure how to design one and if i should have L- shaped port or just straight port. If anyone can help plz do. Also a member here "mazdaspl" helped me out buy sketching one up but im not sure what the tune is.

http://i268.photobucket.com/albums/jj39/ma.../kicker34hz.jpg

So if someone who is good with ported boxes please throw some advice and maybe different dimensions for a low tuned box. THanx for checkin my page appreciate everyones help alot.