wowcar

It seems like same type of models having different types of airbag modulators

Hi guys..am here for a help..i need to find an airbag modulator for a nissan march k11 (1999). This is a 1300cc version. The sticker on the modulator is gone an i cannot find any markings (model numbers) on that. I checked for recon parts but seems there are several models available (such as type D, W so on).How do i identify the correct model?