I have part number MR 490089 radio, and would like to upgrade to the entire system by simply changing the entire system to a stock Infinity system. No aftermarket parts, wires, screws, etc....(except maybe some wiring harnesses, etc...from Crutchfield.

Simply plug and play.

Is this possible? If so, where would I get all the equipment in one place? Not interested in hunting it down.

I might be interested in upgrading the speakers if anyone has any ideas?

I'm older and want it to look and operate like stock, but sound great.