I guess I will be the first one to post up what I have!
I will be keeping the stock deck, but I did replace the front door and rear deck speakers with Polk dxi570's. Sound great, and got a great deal at Best Buy...$48.
I purchased the AOEM-FRD24 from PAC to make the install of the amp go smoother. I'd highly recommend it!
I installed the Powerbass XA-1500d on an amp rack I made.
Mount for the air compressor
Since I got rid of the styrofoam, The trunk floor wouldn't even support a gallon of milk (great design on Ford's part). So i tore off the old particle board and foam and replaced it with 1/2" board, traced to the shape of the original. Now I can actually use my trunk again!
I purchased the encolsure from Zenclosures online. Small 1.25 cubic foot sealed box. Great product, with awesome fit. My sub is an FI Q12.
I'm happy with the sound.