FS7005 is the "brand new" looking one.
I suppose you
could remove the front panel without removing the chassis on a 2000S, but I think you'll find it much easier to work with an empty box.
I'm not around a 2000S presently, but if memory serves me it would be
extremely difficult to get around the transformers to get to the screws holding the front panel in place.
I think I posted this in the last grill cloth thread, but here's another picture of one of my 2000S rigs redone in SF7005.
I have a sample of FS8024, and it looks very good and is maybe a little closer, but doesn't match my "40 yrs of smoky clubs" grill cloth on my unrestored gear either. I may order some for another Sunn project.
EDIT: It is in fact FN-5660-21,
not FS8024 that I am referring to above. I got my numbers confused.