dubc225

i have been researching alot on these 2 subs just dont know which is best for my plan. my plan is to do a budget minded spl/daily system my goal is to do a 150 under 1000 dollars on subs/amps/and batts now my question is 1) do iahve enough space for 4 15's i have a 98 chevy silverado extended cab 2) which sub is better for my application

well let me rephrase that how much space WOULD i need for either set up