Which amp for 2 S15L7 subwoofer’s 2 ohm

I have one S15L7 2 ohm model now running off a infinity 1211a  at about 854 watts RMS at 4 ohms

I plan on getting another S15L7 soon 2 ohm model but i cannot find an amplifier that does .5 ohm @ 2000 watts Rms and 4000 watts peak  could you please find one for me ?

OR

would it be better to just get another infinity 1211a amp to run the other sub at 854 watts RMS or  should i just go get (2) 4 ohm models and run it off a rockford fosgate T20001bd amp?

i have 2 batteries in the car now 1 deep cycle marine battery that does 1100 CCA and the stock one I also have a HO alternator (160 amp) my question is shold i get another battery if i get another amp or will this be enough?

any help would be appreciated thanks!

so your saying i should get (2) kx2500 amplifiers for (2) S15L7 2 ohm dvc subs  or run the subs some how so they equal 2 ohms ? (if so how would i wire them)

what do you mean they are very hungry for power do you mean the amplifers or the subs? because i already have 2 batteries so do i need another one of the optima yellow tops?

thanks

does it make a differance if their wiered to have a impedance of 2 ohm's or .5 ohm because i found 3 amps that are .5 ohm stable :

Mmats D3500.05 2700 watts RMS @.5 ohm

MA audio hk 401sx  1800 watts RMS @.5 ohm  

lanzar optil 12000d  around 1800 watts RMS @ .5 ohm 

which amp would be best to last for a long time at high power ?

thank you everyone im am going to purchase the kx2500 amplifier and run it to these subs.

what cu ft do you reccomend i have one now in a 4.5 cu-ft enclosure ported do you think it would make a audible difference if i went up to 6.0 cu-ft ported for each sub?

thanks again.

i have had the one S15L7 in a sealed 6 cuft enclosure and it didnt seem at all loud compared to the ported box i have now but when i had it in the sealed box the gain was only at aobut 40-60% of the way up so the sub itself was only seeing probaly like 300-500 rms do you think that the kx2500 will make it sound better at 6.0 cuft sealed because it will have over 1000 RMS going to it (if it helps i mostly listen to rap and some rock) and will the sealed enclosure be good for a low bass  (like in most rap)?

i have heard the term low and loud for ported boxes if i do go ported what frequency should i tune it to for daily driving ( i know most people say 33hz but this sub has a very low frequency response of 18 hz so should i go more toward the 33hz or the 18hz )?

and im am only building this box once because it is going to be built into the trunk (fiberglassed) and to put a new box in i would have to disassemble this box piece by piece (because it is being glued and all while in my trunk ) this helps because then i wont have to worry about people stealing it.