Fastener question

[ochre 72]

Would like an opinion on what finish fasteners to use on my 72 jimmy project.

Is there a company that sells kits from the cab back?

I haven't had much success locating. Southern Kentucky list some kits, but I didn't see blazer specific listings. I plan on calling them when they open up this morning.
I really think I would like to find some that were black coated.

I was thinking stainless, but I plan on painting the bed the body color and I think stainless doesn't take paint well.

Thanks