A: The NP119 has no 2wd. You must lock the front axle to be always engaged and you can use it. From: Teamamc <teamamc@xxxxxxxxxxx> Subject: Eagle transfer case numbers To: mail@xxxxxxxxxxxx Message-id: <000701c4ca91$2530f290$6400a8c0@quicker> I have a NP119 transfer case in the garage. My 81 SX4 has a NP129 installed. Please advise what the difference is and can I use the NP119 in my SX4 Thanks Bryan