This version of vB is also rather ancient, although the newer versions are junk. Most of the other vB forums I see have converted over to XenForo which is led by the original developer of vB and is excellent. It's got a price tag, though, same with Invision (which I use).
Invision has its own CMS framework called Pages, which seamlessly integrates into the forums (they use a core framework where the base is "System" and Forums is just one of the apps available), but with the Suite Core, Forums and Pages, it would total $300 for a new license and then $40 every six months for updates and support:
https://invisioncommunity.com/buy/self-hosted/