I am going to do 2ohms on the D2's. I know I could get more out of them with a ported box, but sealed is going to be more in line with what I am looking for in an upgrade. I want to strike a balance between SPL and SQ. That said, I want 12's for the ease at lower tones, with the option to always turn the levels down. I am going to use a 1/0 gauge kit, and if all sounds good I will pull the trigger on that Sundown 1500 Amp.Also on the sub voice coils are you planing on wiring to .5 or 2 ohm? If .5 I would suggest beefing up your elect system as well. Otherwise look at getting d4 subs and wire down to 1 ohm, but I would still suggest some elect upgrades to keep the amp happy.
I have been in contact with NetAudio and the box has been ordered.
The 2 Sa 12's have been ordered.
I just need to find a wiring kit and the amp.