2000 g20 and viper 571 and pkn2

Does anyone know if you can use a PKN2 module with a 2000 Infinity G20 it says it only goes back to a 2001, I thought the electronics were the same,but i do know that the key has a transponder in it, does anyone have any experience with this car, thanks  also when hooking up this remote start do you connect the light-GREEN/ black - factory alarm disarm with the blue unlock wire from the remote start to the unlock wire in the infinity g20, or do you do that different

another question if anyone has installed a remote start in one off these, all the wiring diagrams say the parking lights at the switch are +, I read on another install the installer said the fsm said it was neg. anyone with any experience with this

and also can you tie the factory alarm disarm and rearm from the rs to the door locks?