Custom Fields in Subscription Page
 

I have my subscription setup in vBulletin, but I need a field for people to enter more info. We are a car club site, and we need people to put in their Vehicle make/model etc. How can I do that?

When you create a new profile field, there's an option to add it to the subscription page.

My hacks may help you if you want a separate page to edit them in other than the standard profile field area (plugin 1), and if you want them to show up in a separate area in the member page and in the header of each of their posts (Link 2).