I have been using the below linked cam for over a year and it works perfectly. Same install location which is in the key hole for the trunk. This requires the harness from svxdc to connect to the factory radio and a relay for power since its a 12vdc cam. Total cost is under $30-$40 IIRC.
The below cam is $15, I found them being sold for $2 shipped at one point and bought about 5 of them just in case one went bad on me. If you search around you can probably find them cheaper.
http://pages.ebay.com/link/?nav=item...027240&alt=web