yea you want a mono channel amp and they get expensive

 

you may be thinking L7, the CVT is the slim line, that can work in .88 sealed per driver.

 

you get what you pay for...wanna run three woofers, get an amp that will do roughly 1200 watts...and power all three.

 

ok well now the question is should i put the three in one big box sharing space, or should i put a wall between each one? ive seen 4 cvr 8" sharing space in a regular cab and it sounded good, but doesnt it cause the speakers to sorta fight each other for air?

 

unless you have the ability to make each seperate box with the EXACT same airspace, i would build one large box. You wont see any troubles with the subs "competing" for air.

 

ok thanks

 

common chamber is fine

 

In highschool a guy in my class had 3 or 4 (cant remember) JL 12"s behind the seat of his RCSB Dodge Ram. I think he was running 1 1200 watt amp and the subs shared air.
He'd leave it turned down because even 8"s sound GREAT in a regular cab.
Around graduation someone borrowed his truck to go to the store. They realized he had a system and rolled the windows down and radio up. You could hear every single thump bump and groan all the way to the store, and all the way back.
2 blocks away and you could still feel the vibration on the building and it sounded like they were in the parking lot.

I'd go with 2.

 

The only thing you have to watch out for is if you lose a sub in shared airpsace, you'll probably lose the other one. Common airspace is fine though.