Both chrome and aluminium have problems. chrome pits if not stored in climate control. Alum requires a lot of polishing if you want to show. i suggest
stainless steel where possible. SS parts are becomong more avail. I am going with what I can easily make look new : rattle can paint! There are lots of cruisin ins around here and a SBC with chrome and billet is run of the mill. Maybe the reason why RAT RODS are so popular : vintage paint with rust?