[962porsche]

send the panels out and get them blasted then spray an E-primer on some places that do blasting will also prime them too if you want . there is no primers made that hold out water . so in no way should you let them sit in any rain or even a damp shop for any amount of time . i would opt for an etching primer not an epoxy primer . an etch primer has a higher chromated base than and epoxy based primer . the down side is that you can't use a polyester based primer like feather fill over it . so if there are alot of pits you will have to skim coat it with a product like icing or metal-glaze . thay are very light weight body fillers meant to fill in pin holes in heavy weight body fillers .you might call it bondo . but bondo is a brand not a product that would be like calling every car a ford !