setup advice

Hi everyone, I wonder if anyone could take a look at the following diagram of my current setup and give me any thoughts on how to improve. The cabin is super small, 2-seater coupe. I was advised that the 6.5" components would be sufficient for mid-highs, but after hearing it I think it needs some rear fill. Currently it sounds pretty 2D, and I do have a lot of power left to accommodate, say, a set of 4x6's.

Had you initially ran that amp in 5 channel mode, with the separates on the front and whatever rear fill you want on the rear channels, you may have been happy with the sound.  Now that you have heard the separates with 200 watts on each side, you will never be happy with 50 watts per channel.

not sure why I thought I could add rear fill, the components are 4ohm and the amp front and rear channels are currently bridged for 2x200w @ 4ohms. It was either that or 4x50w which I think would leave the components starved for power. So, to accomplish rear fill does it look like a set of low power 4x6's off the deck with inline attenuators? I'm not sure of the terminology here, and am no expert, any help appreciated.

haha...i was just writing a response to my own post when you replied. Looks like you came up with the same conclusion.