If you realy want a beast in batteries? Check out the Nortstar NSB G3100 strongest battery I've found yet. But a little on the pricy side.$290 I use 1 behind the seat connected with 0gage wire to aSVR 90 under the hood. I use a Mmats D-300 in stage mods doing about 2350 watts and 2 15" Treos SSX in a 8.5 c. box and doing 148+ in compitition.