my first box HELP

i need more bass in my car so i decided to add subwoofers found a reasonable deal on craigslist of a guy selling 3 10 inch rockford fosgate woofers and 2 kicker amps. not the best in the world but im not going for world class SPL trunk rattling just something that does justice. i looked online and nearly everywhere for a pre-fabbed box but none met the requirements or budget so im building my own currently waiting for the rain to stop (i love baltimore weather)

THE RECOMMENDED SPECS for one woofer is

HEIGHT 12.5
WIDTH 19.5
DEPTH 7.75

TOTAL MEASURED ROOM IN TRUNK FOR BOX

HEIGHT 19.5
WIDTH 39
DEPTH 39

using 3 woofers based off the recommended specs
can somebody tell me exactly how high wide and deep my box should be thanks guys

 

cool just lookin around the forum and following some of his builds he knows his stuff CANT WAIT i forgot to add this but its 3/4 inch wood im using from lowes got it at a reasonable price 15$ floor price was like 35 dollars

 

Box almost done thank god for home depot tried to do the cutting with my roommates ghetto saw didnt work ill post a couple of pictures up

 

do i divide each subwoofer or are they all in one area with the ports thanks ranger

 

how much power should i throw to this combination now that the box is almost built i have a 300 watt kicker amp but a friend of mine says ill be needing more like 900 wats for it

one subwoofer is 150 rms and 300 max
i was thinking 450-500 would be the match for it
also the subwoofers are 4 ohm could i drop them down to 2 ohm or even 1 ohm would it be safe or recommended???
the sub woofers are also single coil how should i wire the box up?

 

been busy with my winter semester classes at college....had to give my final speech for speech 101 at 10 am at ccbc than haul tail to bccc (baltimore city community college) forglue spring classes so this week i been pretty busy but today i braced the box cut all the holes out and cut the 4 inch diameter by 5inch pcv pipe shes coming together slowly but surely only thing i have left to do is glue than screw the braces perminitely round out the holes for the ports finish drilling the top box once thats done cut 3 more holes for the wire connectors on the back of the box and make sure everything is sealed nice and tight probably paint the box havent decided yet hope you guys enjoy my progress.... this is my first ever box build if you cant tell *shrugs shoulders*