Sorry for the hazy cell phone picture, it's all I have. And it was really sunny.
My amp is bolted to the back of my subs, and I play them LOUD. The setup hasn't had a single problem in about 10 months of abuse. I'm sure that the amps are made to withstand a lot of vibratifons, even my little PowerAcoustik amp has been fine. It's not the best amp in the world, but my head would explode if it could go any louder.
It's run through my Apline headunit, and my stock speakers were actually really nice, so they haven't been replaced. You can't really go wrong with placement in the back. And if you're worried about it moving around, bolt it down.
No room in the trunk, but I've been able to live with that... We were able to fit 5 people and 3 suitcases in it for spring break, haha.
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2005 Patriot Blue Sport 3.7L 4WDAlpine Headunit/2 12" Kenwood Subs/620 Watt Power Acoustik Amp
Teenage Driving/K&N Drop-In/MOPAR Tow Hooks & Skids/Debadged
BDS Coils/BDS 5500 Shocks/15x8 Cragar Soft 8's/31x10.5xR15 MTR
Teraflex Bumpstops/Rear Bumpstops/Trimmed Bumper
http://murphyman1.mybrute.com/