I did some research:
https://www.vbulletin.com/index.php?do=features
Is the more advanced vBulletin 4.0 Publishing Suite used? There is a mention about complete customization, including plug-ins. The Suite costs $90 more, which should be manageable for a company the size of 2+2
. Of course there would be some costs doing the customization too, don't know how much, difficult to imagine large sums.