My 2000 4R 3.4 has some sort of a code hand written on the black cover on the front of the engine. Looks like "CGI 132." I've heard of "charged gasoline injection" engines, but not Toyota. And, it looks more like what a salvage shop would write on a used engine. Any ideas what that might mean? Where would I look on the engine to determine if it is the original engine for the vehicle? I would upload a picture but I can't get the file chooser to work.....