Hi,
you will need one interface modules from DEI, two if it is a 2003 and up with the new data bus.
You can not use your OEM remotes for starting, the BCM doing the security does not know about remote starting.
You will get remote fobs that look like your OEM ones, do all the same functions except for driver one/driver two, plus the remote start.
As for brands, DEI owns about nine of them.
http://www.directed.com/
I had good luck with Audiovox, that is what JoDi's uses. Actually, I had good luck with JoDi's, too.
http://www.jo-dis.com/security.htm
If you are looking for the greatest transmitter range, look for Compustar 2wss on ebay. They use spread spectrum and a pager like remote.
http://www.compustar.org/
Take care, Eggert Johnson
