Introduce An Older Sites w/ New Pages Crafted with Wappler

I have several sites that have 50+ pages crafted with Bootstrap 3 & many DMXzone Extensions. I would like to add a newer Admin folder and place in it a more modern user management system with Wappler.

I really don’t want to remodel the whole site… Is it possible to keep existing pages intact?

Should I give it a go or stay with the current framework?