What do you make of this model number? (1 Viewer)

[Ouiser]

I'm pretty sure the 2B never came with a factory turbo, so what am I missing on this model code?

K-BJ41V-KCXY

The X should mean turbo, but the Engine code is 2B.

 

[roscoFJ73]

Could it be an error? The parts diagram show no BJ41 with an X and there was no turbo models in the era.