1) Agreed, but since the wheels are different widths, it's worth being aware before having something machined. SP can pull his and inspect/compare if he ends up with a later axle.
2) Yeah, I think the nuts are the same, but I think the RH sides in 2000 vs 2002 take a different size hex wrench - and I think the 2002 takes a larger wrench.
Ah, gotcha. Wow, my (2000) right side hex drive is 10mm. Bigger than that?
Lots. Don't make me walk down to the shop and get my calipers..