also, what would be a good amp to power these?

I have a Clarion HU, and I know it has at least one RCA on it, since I took it out once. I think it also has some kind of subwoofer controller or something. I bought the car with it already installed.
My work has Sony Xplod, Alpine, MTX, some Baja crap, and Bazooka amps. I have to buy it from my work since the discount is massive. Unless there's a better brand I could get cheaper with the same output levels as one my work has.

I just have regular speakers for the rest of the car, don't intend to put an amp for component speakers on this HU, as it sucks. So the subs will be all I'm looking for. Subs I'm getting, I've decided, and I just need amp tips. any help would own. thanks.

btw: the subs are Memphis Studio models. 400watts max, 300 RMS.