need help box build 2 sundown sa 12

[punchy]

Ok so if anyone wouldn't mind helping me out I recently but 2 sundown sa12 and I want to build a box for them not really too familiar with calculating everything up or anything like that new to this but I really want my subs to sound great I have been looking around and I have seen 4 cubic feet at 32 Hertz a lot so I'm wanting that or what ever is going to really move some air and do hair tricks lol my car dimension

H-14 inch max

D-28 inch max

W-32 inch max

If anyone can help a fellow basshead please help me thank you