Chunk them in a cup of Rust-Solve overnight and they will be all cleaned up next day. THEN paint them with etching primer and "chrome". Better yet take them to the plater's and have them chromate coated.
1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
All my troubles are Rover