The problem with the Chinese counterfeits is that you never know whether they are flood, wide, spot or driving beam. I would not mind a pair to back up my poor reverse lights but I need them flood/wide and not too bright..
Cheers
Check this design out.
Best design I've seen for the 90 series.
From Almont4wd in Spain:
I'd just improve this design by drilling a few ventilation holes on the front plate.
Regards