I have a new Kenwood DNX8120 I'm putting in my 2002 Trans Am.

The speakers I'm using are:

TS-V6 Audiopipe subs for the back seat sail panels
CDT CL-E61CV component speaker system (doors)
CDT CL-4EX coaxials (rear hatch)

I just found out my factory monsoon amp is partially out. So, I'd like to put an aftermarket one in. Any suggestions? I'd like to mount it in the stock location and just splice into the factory amp wiring harness in the back by the tire mount.