Why would you want to talk about something that is long dead as far as any real advancement. IPB has been buried for years according to Invision.
Personally it is a pet peeve of mine when people refer to the more modern software now known as Invison (granted it has changed multiple times over the years) by the archaic name of IPB.
If it was still IPB, folks would still have a perpetual license.
From what I have seen, IPB really only now refers to the free hosting site like ipbfree that are using a decade+ version of what is now Invision.
But I do wish you well with the attempt. You would have been closer with IPS.
Currently a friend of mine is trying similar with an alternative site related to support for XenForo.