i would not tune that high or less u wana go pure spl. in that case u should up to the 2200 and to 12inch fi bl's would b sick. but then again i would not go with over 35 as far as tuning goes with the bls. thats just me. if u tune high you can go with Aq .
u can check out my battery but if u up your power u might wana try a bigger battery. u can go with 2 audioque 2.5 12s tune to 35hz . i know some people say they can take more then the 500 but u can try them on your 1200d. u can allways make up for the power by goin with a bigger box. it sucks i wish u had a truck bro cuz u can keep your amp and make your box bigger and it might save u from buyin a new amp. just think it over
2 12" SDS's tuned around 40-42Hz with 16^2 of port per cube. then make a port reducer to drop port area/tuning for daily. Would be nice off the 1200...