Hi there! Yes KP is right, the smallholed headlight shell was used also on K1 model and it is originally painted in the same colour as the fork covers. The K2 and later has a big hole and it was in black plastic used together with cromed fork covers.
The two-hole (for taillight holder) rearfender with vertical wiring clips was used also on K0 models. The K1 was equipped with three mounting bolts for taillight holder and horisontal wiring clips. Regards, Bo.