I'd look for something that puts out around 1000w at whatever ohm load you prefer. Your car will handle it fine, I've got a sh
itty little 4 banger too, it's no problem. These subs are beasts and can easily take 1k all day, but I'd set the gains to 800w, just to keep it clean and have some head-room.
Yea, the Hifonics will draw a lot of current because it's cheap, and most cheap amps are terribly inefficient. And you can get much better for under $300
The amp this seller has here is Brand new, and he's dropped his price as low as $160 shipped to your door. It does 1000w @ 2 ohm (underrated), and like I said, you could set the gains to like 800w and have plenty of head-room, keeping it very clean. Here it is:
http://www.caraudio.com/forums/amplifier-classifieds/526890-fs-avionixx-cxd-2800m-class-d-1ohm-stable-1300wrms%3B-brand-new-unused.html
Here's another beast of an amp right at $300. I know it way more than you need right now, but you'll have a ton of power on tap if you ever decide to upgrade in the future:
http://www.caraudio.com/forums/amplifier-classifieds/544627-aq-2200-fs.html
Here's an SAZ 1500 for $300 shipped, it's an absolute beast, and probably puts out closer to 1800w at 1 ohm. You'd have it at 2 ohms though, and set your gains accordingly, so the advantage would be you have more power available for upgrades. And it's very efficient:
http://www.caraudio.com/forums/amplifier-classifieds/543573-sundown-saz-1500d-great-shape-v1.html
Here's a Treo RSX1900. Treo makes some of the best amplifiers in the game. They're notorious for a highly efficient, small foot-print, clean sounding amplifier. This thing is at a steal of a price, he's gone as low as $170 shipped:
http://www.caraudio.com/forums/amplifier-classifieds/532359-fs-treo-rsx1900.html
ANY of these amps would blow away the hifonics in looks, efficiency, reliability, and clean power.