Genesis E/S series grills were side knob from '07-'10, and front from '11-present.
If it has the side knobs, it has to be a 310 (3 burners, no extras) or 320 (3 burners, side burner). The 330 (3 burners, side burner, Sear Station) started with the front knobs.
Igniter kit for that grill is...