Hi again..anyway I found a good deal on an orion xtreme amp. 1400x1 bridged at 4ohm. I think im going to go with that????? anyway is this still a good power range for the 2 12" rl-p's  would i need to change the box specs or keep it the same.  also  my vehical is a 92 pathfinder. I believe it is a 70amp alternator. is this enough power for this amp/sub settup imgoing for. or do i need more juice?? thanks for any help