Joined: Apr 2011
Location: North Central PA
I've heard that system in a Shelby American modified GT500, and it sounds great and can make your ears bleed!
I took a different (cheaper) approach. Just changed out the four stock 6 x 8 with Pioneer TS-D6802R. It sounds incredibly better than stock, and the Pioneers could handle extra power if you want to give it to them.
I left the stock door bottom mid subs alone. I pulled a cover off one of them, and they are not built too bad. Much better than the upper door speakers. If I ever change them, I will use a 6.5" with appropriate adapter to fit the hole, or a drop-in 8". DVC 2 ohm speakers are available, so I think a better base response is obtainable if you are willing to spend the $$$.
6 Speed Manual, Steeda Sport Springs, Koni's, FRPP Power Package & LCAs, 3.73s