I'll try and pull the entire assembly this week, inside handle included, and let you know. Honestly that would give you the best bang for your buck because the outer handle is the desirable part.
This van is off site (girlfriend said I have "too many old damn Toyotas, " as if that's possible) so later this week when I'm out at the van I'll take a look and see if the rust has gotten to it as its found it's way into most of the body. I'll let you know what I find out.