I have to replace my bose amp since it quit working, I don't exactly want to replace it with the same one cause I believe it will just fail eventually. Is getting an aftermarket plug and play or how complicated is it?

I am thinking of getting this one if it is not to hard to get it to work:
Any help is appreciated thanks

 

Nothing is going to be plug and play, since the plug isn't anything universal. But a 2004 coupe w/bose amp can be swapped with a 4-channel amp run to the front doors and rear 6x9s. It'll have to be compatible with a differential-balanced signal. JL Audio amps are, and others can do it too, but it can be hard to find out if an amp accepts balanced signals. You'll also need to run power to the trunk, since the tiny power wires for the bose amp can't pump enough power through them safely.