I'm not sure what's up with your account. I don't see any infractions or the like on it.
It's true you can't post in some forums until you get to 75 posts, but there are plenty of others (like the Noobie section) that you should be able to. What happens when you try to post in there?
For any Bronco questions or to chat about it's planned modifications or build, it's better to post each seperately in Noobie Bronco Tech Questions. Flame free zone. This will get more attention and you can build up your post count to get into other sections such as Bronco and Ford Parts/Accessories (75 posts required to view).
Noobie Bronco Tech Questions. Flame free zone! - Ford Bronco Forum