That's a good benchmark Jerry.
I'm assuming that you have a complete SV650 shell, rim and lamp in your 750?
So I though why not buy an SV lamp to use with my adapter, but then I saw this.
http://www.ebay.co.uk/itm/SUZUKI-SV6...kAAOSwj0NUlEL3
Is that what you have in your 750?
It looks like a rather unusual set up and I doubt it would fit an ordinary 7" shell, nor my adapter... Rather a lot for a second hand light too.!!