You could revamp the post, I wouldn’t see anything wrong with that. As long as you’re providing some things new. I would just copy and paste the old post for instance.

Or you could compile the old posts in a Collection on PeakD. Another option is to just edit the old posts.

Personally, I’d just make a new post or set of posts that condenses the old stuff and gives and even better collation for it all. Then if there is more then one post, make it into an easily accessible collection.