Im looking at getting 2 12" Alpine Typr R subs in my single cab F-150. THe subs are set at 2 ohms with 1000 watts peak in a ported box. Im not sure how many cubic feet the box will be yet but i guess 4 to 5 ft, but im really not sure. The 3 amps im looking at getting are Coustic 801DB, Audiobahn A8000T, or the Pioneer GM-D510M. Im going to use a pair of the amps, ya know one amp per sub. Does this sound right, is there anything else i should look at? Im on a $300 budget for the amps and im set on the subs. IM currently running four 5x7 Polk Audio DB 570s with an Alpine 9830 head unit. Oh im going to run the amps at 2 ohms just that peice of info. So i guess what im asking is an opinion on the 3 amps im looking at and what they may sound like at the end. THANKS IN ADVANCE!