i want it facing toward the seats cuz ima put my seats down so it has more air so it hits harder but i just wanted to c if i could have 1 15" instead of 2 12"
i got a 97 mustang too and got i 12" L7 ported box in there H:13 1/4 W:18 1/4 L:16 1/4 and that boxed barely barely fit in there i had to run and ram it in there lol. so i would say good luck wit the 15 box Maybe Maybe a sealed one look on ebay at sizes.