Finding correct amp for subs

i am very new to car audio and forums, i was just given two new 12 inch aw1251t audiobahn subs in a bandpass box.

Specs: 45 oz. strontium magnet

power handling: 400 watts RMS frequency response: 24Hz - 1kHz Efficiency: 92.1 dB 2” 4-layer asv voice coil dual 4 ohm 2 or 8 ohm operation 

what size amp and wire needed for at 80-90% capacity constantly.

N. is hot

You'll need about 700W to 800W RMS from your amp.  Is the 2 or 8 ohm operation for the whole unit or each sub?  If it's the whole unit, then get an amp stable at 2 ohms that produces 800W RMS.  If each sub is 2 or 8 ohm operational, then the total load will either be 1 or 4 ohms.  Look for an amp that pumps out 800W at 1 or 4 ohms.That's my opinion. Take it, leave it, or correct me.

If its audiobahn (ugggG) in a bandpass box, It is probably pre-wired, and if they are both dual 4 ohm subs, then ODDDDSSSS are, its pre-wired for 4 ohms. could be one, but highly unprobable... Audiobahn watts are fake watts, I wouldnt spend too much trying to power them to capacity with a good brand amp unless you plan on blowing them. 500 real watts will probably blow those subs in time.99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)