How to integrate buddypress registration in wpmodal as default like designwall site ?

Hi my question is how can i sink and integrate “registration feature provided by buddypress” in modals by default, instead of using the “wordpress registration feature” i have been able to successfully bring login and registration process to modals using wpmodal plugin but the registration page it uses is from wordpress and not buddypress is there any way or piece of code that i should be using to force the buddypress registration page in wpmodal ,overwriting the default wordpress registration completely just like designwall website has?
Thanks