Search harder my friend search harder
try check out the completed section this will give you the most insipration, but since we were all newbies at one stage,
a laptop presents interesting on / off switching requirements, a desktop is easier to mod and "stealth install"
as to pc in trunk, dvd up front, usb 2 or firewire is the way to do it, with some form of external power supply for the device either up front with it or remotely
and a word of advice get an Opus power supply or Mastero power supply if using a desktop dont try skimp on this