Thanks Phak1.
I think the splines on the remote operator may still be usable, but will consider replacing if necessary with aftermarket, as tthey're pretty affordable.
I did see a set of handles claimed to be NOS on Ebay but they were pretty pricey.
I will go ahead and post for a handle in the "Truck Parts Wanted" forum as you suggest... and continue the hunt on Ebay as well. Thanks again!