Is this a good Sub and Amp combo?

: http://www.ebay.com/...1287907067

I want to put subs in my ford focus, I want to make sure that the amp is good enough for the subs as I'm clueless when it comes to matching these things. Also is it ok to put this particular amp behind the panel in the trunk or will it get too hot? Also I want to know if its possible to wire it with connectors or something to where I can easily disconnect the sub for extra trunk space when needed?

Mechanics and DIY fixers: Diagnoses on Automatic Car Error Code?

Error code P0750 on Ford Focus 2007. Already replaced Solenoid A as well as a Transmission Fluid Flush a month ago. Saw exposed wire for Sol-A and cut and reattached the wires with solder, no protection over soldered wires. I saw today that the Transmission Fluid is dirty, despite a flush a month ago. Does the Error Code deal with something else other than the Solenoid? Websites aren t helping me

What causes a 2001 Ford Focus to shut off when stopped?

What causes a 2001 Ford Focus to shut off when stopped? - 1

Added (1). My daughter has a 2001 Ford Focus. It started shutting off every time she came to a stop yesterday. Today the engine will turn over but won't turn all the way on. We replaced the plugs, thermostat, throttle body, idle air sensor, throttle position sensor, mass air flow sensor, and put in a brand new battery. What else could the problem be? Had a mechanic look at it and he gave some suggestions but he's not 100% sure. We're going to try those but I wanted some other opinions also.