Can anybody please tell the headlamp size of gs-150 and cd-100. I am asking about the plastic housing in which the bulb is mounted. Is it of diameter 7" that is mentioned as universal round headlamp or headlight (non technically) on websites.
I am asking because if I have a round 7" sealed beam headlamp would I find a bucket(handi) for it, and will it fit in gs or cd 100 headlamp assembly(bucket).

Please also tell about what type of headlamps and buckets are available for mcycles in market.