100 rms is the continious, but you can have it running at 150 rms.
My amp is 139 watts, but the speakers are rated 110 rms, 300 peak i think.

http://cgi.ebay.com/PHOENIX-GOLD-Xen...QQcmdZViewItem

that's just for starters. You can go with a higher powered amp, and you'd have more headroom. (cleaner sound)

I'd go with an amp that's 150 per channel, yet 100 watts per channel would still be ok, but if you hear distortion, turn it down just a little and watch the gains.

be ready to spend around 40 for a wiring kit and unless you know somoene that knows how to install amps, having it professionally done will run you around 50-60 bucks.

g'luck.