save just a little more and get a hifonics amp, try a 1000d , they should do the job for those subs, if they are 4ohm DVC, if not, then youll probly have a hard time finding an amp for cheap
or, o yea, a audiobaun 8000t, i dont like audiobaun but i hear that amp puts out what it claims, and it would work if they are 4ohm SVC