What is the best size subs for a 97 ford f-150xl?

Question

it is a 97 model, long wheel base, 4x4, and has about 7-9 inches in between back of cab and back of seat?

Answer 1

2 - Kicker L7 10" subwoofers around .7 cu ft per sub or 1.4 cu ft for a pair.

Pair them with a high quality 1000 - 1200 watt rms amplifier.

good luck.

Answer 2

go with 2 tens, they should fit, or even 2 12"shallow subs they are usually only 3"-6" thick.

check out the alpine type S affordable and good quality, plus still is a little tall like a traditional sub.

http://www.crutchfield.com/App/Product/I...