This is what the results looked like on my '66 Chevy C20 front frame rails. I used Industrial Purple degreaser, a good scrub brush and some elbow grease in preparation before applying POR-15. I did all of this with a quarter of a pint of black POR-15 with a small detail brush in a few hours. I used the small detail brush, in order to get in the tight spot, as encountered with front suspension parts. I am very happy with the results, both appearance, durability and lasting protection.

Frame Rails Before POR-15

Frame Rails After Degreasing & POR-15