Sub question
I have a 10" MTX Blue Thunder sub (from a previous vehicle) that I would like to install in my truck. Anyone have any experience to relate with installing one in an extended cab Superduty? Also, anyone have a good source for plans for an enclosure that will fit under the rear seat (without raising it if possible) and will produce a good sound? I guess if it turns out to be too much trouble, I may be able to make you a good deal on a sub! 
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Y2K SD250 SC XLT, 4x4, 5.4L, Auto; SWB; Off Road Pkg; Towing Pkg; Torreador Red; Sliding Back Glass; Tinted Windows
Mods (minor so far):
Wish List:

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Y2K SD250 SC XLT, 4x4, 5.4L, Auto; SWB; Off Road Pkg; Towing Pkg; Torreador Red; Sliding Back Glass; Tinted Windows
Mods (minor so far):
- Westin step bars (black powdercoat)
- Bugflector II bug shield
- Pendaliner S/R bedliner
- Vent Shade Ventvisors
- GTS Slotted taillight covers
Wish List:
- Gibson SS exhaust
- Rolltop bedcover (probably Retrax)
- AirAid or K&N FIPK
- Grill guard
I also have the MTX dual 8 inch box in my F-150. I can tell you this though...my wife has 1 10 inch JL Audio in her Expy and it kills my stereo no question about it.
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Steve
Mine:
1999 F-150 Sport Supercab
Bright Red 4.6L Auto
Billet Grill, Billet Ant, Clear Corners, Sony CD Player, Pioneers in all doors, Kicker 100si Amp, MTX preformed underseat box. Fiberglass Bed Cover
Hers:
2000 Expy Sport
Black, Grey Leather 5.4L
Clear Corners, Alpine CD Player, Punch 150 Amp, JL Audio preformed sub box in rear panel.
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Steve
Mine:
1999 F-150 Sport Supercab
Bright Red 4.6L Auto
Billet Grill, Billet Ant, Clear Corners, Sony CD Player, Pioneers in all doors, Kicker 100si Amp, MTX preformed underseat box. Fiberglass Bed Cover
Hers:
2000 Expy Sport
Black, Grey Leather 5.4L
Clear Corners, Alpine CD Player, Punch 150 Amp, JL Audio preformed sub box in rear panel.
I agree that a 10 or 12 could easily outclass 2 8's, but it might be difficult to find a box that will hold them and fit under the back seat. If the 8's are set up right, they can sound pretty good. My setup is with an Alpine CDA7845 head unit and a MTX 2200 amp with 2 8" punch speakers. I am wanting to add aftermarket speakers to the doors but I am hesitating because I can't find anywhere to mount another amp.


