Will 7" H4 headlight fit a /5 headlight bucket?
As part of a customization I'm performing, I purchased a BMW /5 headlight bucket, sans innards. The item was advertized as "BMW Airhead R50 R60 R75 /5 7" Headlight Bucket Shell ". The inside diameter of the chrome bezel ring on the bucket I received measures 176mm, which is indeed about 7".
I will be using this shell on another bike with a capable electrical system so I'd like to outfit the headlight with a H4 halogen assembly and use a standard 55/60 halogen bulb (meaning, there is no need to use original /5 headlight parts). I've searched locally through junkyards and aftermarket auto parts dealers for a 7" round headlight assembly but have failed to turn up anything locally which would give me the chance to test fit before purchase. This leaves me to purchase mailorder.
Given that I can't test fit the headlight assembly before purchase, my question to this group is:
Will a universal 7" diameter H4 headlight fit the /5 headlight bucket I have?
There are numerous candidates on Ebay that I can choose. Thanks for any help.