I just bought a 2000 4Runner SR5 and the previous owner did not know where he put the remote for the security system. I am getting a remote start and alarm installed by the shop next to mine and the needed to know which I had. So I poked into Alldata and it says the remotes were different and used different frequencies and were not interchangeable. I still don't understand why it would matter if they are going to be doing an install not a mod of existing, but is there a way to tell what version my truck has??