I recently started on my project. I have RAAMAtt that covers the floor and am starting to do the sides. I have filled the back doors, side door, and most of the holes in the van with great stuff expanding foam.
Other cars:
1971 Honda 600 (I have 3 parts cars if anyone needs parts

)
2002 Olds Intrigue - Bose sound system, not getting replaced
2007 Chev Express - it has a Pioneer Avic-z2
To Do List:
Finish covering inside with sound matt
Install a computer monitor in custom console
Make permanent boxes to house rear speakers nicely
Install a deep cycle batter and isolator
Carputer specs: Intel D101GLY, 1GB RAM, Garmin USB 18 GPS, Samsung 80GB 2.5" PATA HDD, Samsung 5.25" DVD Burner, M2-ATX, WinXP Pro, Road Runner + Digital FX2
Current Stereo: JBL GTO301.1 II | Alpine MRP-F550 | MTX 12" thunder T5512-44 sub in a MTX BS112S enclosure | Alpine SPR-69C | Alpine SPR-17S | Legacy 1.6 Farad Cap