I know it hard to say just from pictures, but anyone have any idea if there are still usable?

This is the rear housing.

 

And here is the front housing

 

From what I can tell from just pictures, I wouldn't use those - both look like they have pretty deep scoring and/or chrome flaking going on. If you can catch a fingernail on them, I definitely wouldn't use them. Before you chuck them though, you might want to give Goopy Performance a call to see if these are candidates for a housing refurbishment service they offer.

Goopy Performance

 

I'll shoot them an email, thank you