single login for xenforo and vbulletin

[movikase]

i'm currently runing large community of vbulletin 3.8.4 with so many customized mods and i like xenforo products, i would like to have both forums running at the sametimes with different modifications but wondering is there i can make both vbulletin and xenforo with single login for users? so that ways i would still able to keep my vbulletin with my customized mods and running new comunity on xenforo?

thank you

 

[Paul B]

It would require custom development to have single sign on across two different platforms/installations.

 

[movikase]

thanks Brogan