SOLD!
I have an aftermarket sliding back glass for an 88-98 regular cab (may fit ext cab - not sure) in good shape. It was just removed from my 98 a couple of days ago. It has the factory tint finish. It is the 3 piece design & black framed. It may need a new seal at install time but the seal it still on it & the outside of the seal looks good. It'd be up to you & your glass guy.
I'll take $50 for it.
Pick up only... not wanting to ship.
Cell phone pic sorry...
Glass before it was removed...