This Fits the Toyota Paseo and Tercel w/AT (Optional H.D.). The 17680 is the Standard (PLGR) Unit Here. Both Units Have Just One Mounting Ear Threaded. The 17679 and 17681 are Similar Units, But With Both Mounting Ears Threaded. The 16895 Looks Similar to the 17682, Except the 17682 Uses a Later Ignition Terminal, and Has Only One Threaded Mounting Hole.