Peak and RMS shouldn't be in the same sentence. RMS is a continuous power rating and peak is a very controversial subject which every amp manufacturer will vary on. (What they claim their amp will produce on short dynamic spikes).
Let's start with what the subs are rated for at a CONTINUOUS level. (RMS)
my bad paul. Kinda dealing with somethin out of the usual irl atm. i get what your saying. The RMS is 400 each. But im just honestly looking for a good priced amp(s) to run 4 CVR 12's.
CVR's are rated at 400 wrms each.. They can handle 500 each. with no problems if you are not clipping the sh!t outta them.. I would look into a 1600-2000 wrms amp at the need ohm load. You will need electrical upgrades to effectively run that much power.