Looking to buy a 1999 F-350
 

Has the 7.3l and seems to be in pretty good shape overall.

I did notice the power locks on the driver and rear passenger doors didn't work and the overhead computer was out. Are these typical issues and any idea how hard they are to fix?

This is my first look at a full size diesel truck. I've been driving a 95 toyota pick up since 96, so my experience is limited.

What are the common issues with these trucks that I need to be aware of?

The door locks could just be a bad fuse or relay if both doors locks do not work simple fix.