Working on a 54 chevy PU. Have several new pieces that I painted SPI red several years ago. Going to complete project this winter with SPI Red using all SPI products. My issue is the old parts; Hood, front splash , latch apron and others that are rusted and badly pitted. I am concerned if i sand blast it will blow thru..or warp. I am going to chem strip the parts to remove OE paint and rust reformer that was sprayed years age. Question how do i get rust out of the pits? I know Berry doesn't like Ophso but that seems like the only practical solution. Would the epoxy primer seal the pits sufficiently so as to not get bleed thru?