Snagging the injectors and computers seems to be popular with junkyard scroungers. The injectors are specific to the engine size and are color-coded to indicate which engine they came on. These systems came on everything from 4.3L V-6s to 454 big-block engines, and the injectors have two colors of paint on them depending on how much fuel they flow at a given pressure. The color-coding paint seems to be fairly fragile, so it can be difficult to tell which injector is sized for which engine. These injectors are blue and yellow, indicating a 4.3L. So this throttle body with these injectors would be good for a V-6 of roughly 3.8L to 4.3L displacement. By the way, the actual throttle bodies are the same for 4.3L and the small-block V-8s; they interchange. The throttle body is physically larger for big-blocks, although the injectors will swap between the bodies along with the sensors.