My 2 pennies.

If the "small nicks" are residue from whatever contacted the chrome on the bumper, use very fine steel wool to remove it.

My experience is that paint doesn't adhere to chrome. The chrome surface has to be chemically treated or maybe sandblasted.

There are small bottles called "liquid chrome" and other like brands. It's basically shiny paint with a small applicator that may hide small scratches for a time.
I think the idea is that if the chrome surface has been penetrated, you can dab the paint down into the crack or nicks and the paint will adhere to clean steel.
It may help the bumper look less noticeable. With close examination you can still see the repair.

There is a paint called chrome which is maybe a notch above aluminum paint as far as the shine or reflection of light.
It doesn't have the deep chrome look but is "somewhat tolerable" if used for the whole bumper. The surface has to be prepped just like regular paint.
Be prepared it takes a very long time to dry so don't spray it on too thick.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."