Sights: HPDA vs BHP

[lawson4]

I am looking to get a set of Big Dot sights for my HPDA. I called the company that manufacures them and they didn't know if the sights for a BHP would work.
Does anyone know? Are the dovetails the same? What about sight height?
I wear glasses all of the time (except sleeping and swimming). In order to focus on the front sight, I have to tilt my head way back to get to the reading portion of my lenses. This is not natural.
I'm hoping the Big Dot makes front sight aquistion easier.

Thanks for any info or ideas.

lawson4

 

[lawson4]

I will try to take some measurements today to see if the front sights sit the same distance above the bore on both guns.
I don't know how I will compare the dovetails.

lawson4