[quote="Sheldon Dingwall":d8tm4qfa]Hi Kirk,
We've never used Mesquite. I'd be happy to talk to your brother about it. Thanks.[/quote:d8tm4qfa]
Mesquite is a shrub mostly and it takes an older one to get a nice burl. I have seen some on google images that are stunning. I am not sure how well it would be for making a guitar.
Down in Texas they use it for BBQ a lot.

I will ask my brother how big the pieces are and if he has any photos.
Kirk