I picked up my Brookville body this past August. When I ordered the body it was my understanding that the primer is meant to be a rust preventer and not a base for paint. I plan on removing the primer when I start the body work. This has worked out well for me as I am still working on a current project and the body is sitting on its frame in the corner of my shop and I am not concerned about oxidation. In my case if it did not have the coat of primer I suspect I would have that nasty brown oxidation starting.

If you plan on doing the body work as soon as you get the body I would probably not have it primed.

Hope this helps.