Noise is still there.

I've replaced:
Both flex plates
motor mounts
center carrier bearing
Differential bushings

I'm at a loss, so I guess I might take it to a shop.

As a recap the car makes a rumble/rattle noise and sounds like it is happening right underneath me while I'm driving. The noise happens under hard throttle and is not rpm dependent. If I ease into the throttle I can make it all the way to the redline. Any advice?