I've been using Bonda as part of my classic car restoration metal projection arsenal for about 3 decades, long before Bilt Hamber products were en-vogue.
There are many Triumph Sport Six vehicles going around, solid as the day I finish them, all with Bonda primer keeping future rust at bay.
It's my go to primer, without qualification.
Dammit! It does look perfect for that. So a good rub down then paint with one or two coats? Do you brush or spray? What do you put over the Bonda, if anything?
Any Stags? Friend of mine had one 25 years ago and we drove from London to Edinburgh in summer with top down, what a bloody lovely memory that is and what a motor!