I had a set of kenwood 6x9's laying around, wasting space in the store room, and decided to mount them under the rear deck. I was concerned it might turn out ghetto, but they are rock solid. I just removed the old paper ford 6x8's from the top. I used bungee cords to hold'em up there, while I drilled the holes, and drove in the screws. I spread a sheet out to catch the metal shavings. Really upgraded the shaker 500.
Anyway, if you got 6x9's dont hesitate to mount'em, it was easy.

__________________
'06 GT Vert Torch Red/Black top/int, IUP, Polished Bullits, , PioneerInfinityMTX Sound System, Tuneable Induction by DeMolet, SCT2 93 Octane Tune by Brenspeed, Red Calipers, Steeda Ultra Lites, Shifted by Hurst,