well when they do the inspection they are just doing a smog on it like it is the vehicle that your engine came from so they entered in my vin, weighed it ect. just like a normal smog but then they look for all of the original emmisions equipment in my case 3 three way cats, evap. canister and all connections, all 4 o2 sensors and then they connect the obd2 connector of the smog machine and the smog machine checks for any codes stored and also checks for monitor status these two things are impossible to fake so if your vehicle is a 96 you must have a 96 up engine, and in my case an automatic transmission since toyota never made a manual v8 tundra (damn toyota):wtf: with every thing atatched including obd2 conn. if you want to get a bar label and be legal