Remove Rust Pattern

[Garage Dog 65]

Hi guys,

Chemical stripped my hood yesterday. It had been primered 20 years ago - then placed in a storage bin in Florida. Rust has come through the primer to the surface - and there was also rust 'trails' under the otherwise good looking primer. Once I removed all the paint and rust - there is a remaining rust pattern or discoloration in the clean metal. I've sanded the entire hood in 80 grit and the patterns persist. Do I need to continue sanding (or media blast) to remove those patterns to get to a completely shinny appearance ? Or will a metalprep wash be fine ?

Thanks !!

Jim