The Jensen unit that you mentioned will have a mosfet amp in it also. I don't know what you are looking for, but, atleast in my opinion, a cd player is a cd player. look for a 45 or 50 watt that you like, and go with that.

They take nothing to install. you need to get the head unit, and a wiring harness that will fit your car. Wire the harness that you bought to the other harness that comes with the head unit with some butt-connectors, and plug it in where the old head unit used to be.

The wiring of the harnesses should take like 15-20 minutes for a beginner, and the install of the deck into the dash is a piece of cake.