Hi Bryan, welcome to the forum and X1/9 ownership. Is this your first X1/9? Besure to tell us all about it.
There is a member right there in Mesa that has a X based project (he is doing a engine swap), and collected a couple extra parts cars in the process. I know he recently got rid of some of it (including a engine and trans), but contact him and ask if he knows of anything:
https://xwebforums.com/forum/index.php?members/ed-lord.5252/
I believe he may currently be recovering from an injury, and his business keeps him away a lot, but see if he has suggestions around AZ.