Or I have an Autotek 1900.1 you could put on the type x's, and I will do that for the same price. Its 1900 at 1ohm and the subs are 1000rms each. Thats the setup I had and they were sounding good and hitting extremely hard.
pm me if you're interested in a 15" Kicker L7 with a zx1500.1 to power it. I'd give them up for around $450-500 and have a killer ported box for the 15 too.